Red Ribbon `#ED0A3F`

Red Ribbon (#ED0A3F) is a mid-tone, vivid red with an OKLCH hue of 20°, lightness 0.6 and chroma 0.238. It sits on the warm side of the color wheel. In practice it behaves as an accent color: strong in focal moments, dominant over large fields.

Color values

HEX	`#ED0A3F`
RGB	`rgb(237, 10, 63)`
HSL	`hsl(346, 92%, 48%)`
HSV	`hsv(346, 96%, 93%)`
CMYK	`cmyk(0%, 96%, 73%, 7%)`
CIE Lab	`lab(50.2 76.2 36.4)`
OKLCH	`oklch(0.601 0.238 20)`

How Red Ribbon behaves under real light

Under warm 2700K interior light Red Ribbon is virtually unchanged; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 0.8), so it is a lighting-stable choice.

Warm interior (2700K incandescent / warm LED): → #ed0039 — ΔE 0.6, is virtually unchanged
Neutral LED (4000K task and retail lighting): → #f1003d — ΔE 0.8, is virtually unchanged
Daylight (6500K standard daylight (reference)): → #ed0a3f — ΔE 0.0, is virtually unchanged
Blue-sky shade (cool daylight (~10000K proxy)): → #ee0c40 — ΔE 0.2, is virtually unchanged

Test Red Ribbon in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.

Contrast & accessibility

Against white it measures 4.45:1 and against black 4.72:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text.

Colors that go with Red Ribbon

Tonal

One color explored: close hues with real lightness and chroma structure, so the palette is the anchor through value rather than a set of colors.

#ffc8c6 · #ff8789 · #ed0a3f · #bf0030 · #83001d · #4c000c

Analogous

The anchor's neighbours on the wheel — everything shares an undertone, so the chord carries color without anything having to be muted to get along.

#fb7c00 · #f8501c · #ed0a3f · #ca0060 · #a70071 · #810578

Shifted

The mid-gap pairing — sage and mustard, terracotta and olive. A foil rotated 40–65° toward warm or cool: too far to be kin, too near to argue, carried by temperature and a deliberate value offset.

#ffa914 · #cc9141 · #ed0a3f · #bb002e · #8a001f · #422700

Contrast

One deliberately opposed voice — a single restrained counterpoint across the wheel, or temperature against temperature where the anchor is too muted to carry a loud opposite.

#ffdfde · #00dfe8 · #ed0a3f · #855050 · #791823 · #471015

Quiet Support

The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.

#d9f9fb · #b7908f · #ed0a3f · #556b6c · #421d1e · #000203

Bright Accent

This color as a ground rather than a subject — its own restraint held across a narrow value band, carrying one saturated voice from the opposite temperature.

#e6f5f6 · #bccdce · #8da1a2 · #0c282a · #000607 · #ed0a3f

Complementary

The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.

#dbd9b3 · #39c4f5 · #ed0a3f · #8c587b · #273a65 · #020d24

Split-complementary

The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.

#ccfdff · #00b68f · #ed0a3f · #007095 · #003326 · #00050c

Triadic

Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.

#d9fed1 · #4fb636 · #ed0a3f · #005adc · #002465 · #000200

Tetradic

Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.

#f4f7bf · #a2a300 · #ed0a3f · #00757a · #300072 · #000203

Tints, shades & muted variants

Tints

#F94A5A · #FF7278 · #FF9797 · #FFB7B6 · #FFD5D4

Shades

#C60032 · #9F0026 · #7A001A · #570010 · #360006

Muted

#D9424F · #C55A5D · #AE6B6B

Using Red Ribbon

Its chroma is high enough to carry accents, calls to action, and focal moments; large fields of it will dominate a composition. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.