Stoplight `#DD1111`

Stoplight (#DD1111) is a mid-tone, vivid red with an OKLCH hue of 29°, lightness 0.57 and chroma 0.227. 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	`#DD1111`
RGB	`rgb(221, 17, 17)`
HSL	`hsl(0, 86%, 47%)`
HSV	`hsv(0, 92%, 87%)`
CMYK	`cmyk(0%, 92%, 92%, 13%)`
CIE Lab	`lab(46.7 70.5 55.4)`
OKLCH	`oklch(0.568 0.227 29)`

How Stoplight behaves under real light

Under warm 2700K interior light Stoplight is virtually unchanged; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 0.6), so it is a lighting-stable choice.

Warm interior (2700K incandescent / warm LED): → #dd000a — ΔE 0.6, is virtually unchanged
Neutral LED (4000K task and retail lighting): → #e00a0e — ΔE 0.6, is virtually unchanged
Daylight (6500K standard daylight (reference)): → #dd1111 — ΔE 0.0, is virtually unchanged
Blue-sky shade (cool daylight (~10000K proxy)): → #de1212 — ΔE 0.2, is virtually unchanged

Test Stoplight 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 5.04:1 and against black 4.16:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text.

Colors that go with Stoplight

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.

#ffb9ae · #ff7565 · #dd1111 · #b00004 · #750001 · #3f0000

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.

#e07f00 · #dd5a00 · #dd1111 · #bd0044 · #9b0057 · #79005f

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.

#e7a700 · #b88c38 · #dd1111 · #ad0004 · #7c0001 · #342200

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.

#00ddf4 · #be8880 · #dd1111 · #90362d · #691914 · #3c0a06

Quiet Support

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

#daf8fd · #ac8882 · #dd1111 · #4d6165 · #3d1b16 · #000304

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.

#e6f5f7 · #bccdd0 · #8ea1a5 · #0f2a2e · #00070a · #dd1111

Complementary

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

#d3d8b3 · #32b0f4 · #dd1111 · #89506b · #28365d · #030930

Split-complementary

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

#badcc3 · #6dadcb · #dd1111 · #3f6b5f · #283350 · #1c040e

Triadic

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

#d4ffd9 · #17ae4c · #dd1111 · #2d44da · #0e007c · #000200

Tetradic

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

#edf9c6 · #899e00 · #dd1111 · #006a76 · #330062 · #000304

Tints, shades & muted variants

Tints

#EB4A3D · #F86E5E · #FF9081 · #FFB3A8 · #FFD3CC

Shades

#BA0005 · #960002 · #730001 · #530000 · #350000

Muted

#CB3F33 · #B75449 · #A2645B

Using Stoplight

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.