Scarlet `#FF2400`

Scarlet (#FF2400) is a mid-tone, vivid red with an OKLCH hue of 31°, lightness 0.64 and chroma 0.248. 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	`#FF2400`
RGB	`rgb(255, 36, 0)`
HSL	`hsl(8, 100%, 50%)`
HSV	`hsv(8, 100%, 100%)`
CMYK	`cmyk(0%, 86%, 100%, 0%)`
CIE Lab	`lab(54.6 76.2 67.7)`
OKLCH	`oklch(0.638 0.248 31)`

How Scarlet behaves under real light

Under warm 2700K interior light Scarlet is virtually unchanged; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 0.7), so it is a lighting-stable choice.

Warm interior (2700K incandescent / warm LED): → #ff1800 — ΔE 0.7, is virtually unchanged
Neutral LED (4000K task and retail lighting): → #ff1f00 — ΔE 0.3, is virtually unchanged
Daylight (6500K standard daylight (reference)): → #ff2400 — ΔE 0.0, is virtually unchanged
North light / shade (~7500K diffuse blue-sky light): → #ff2502 — ΔE 0.1, is virtually unchanged

Contrast & accessibility

Against white it measures 3.82:1 and against black 5.5:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text.

Palettes built from Scarlet

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.

#ffdad3 · #ff9e8c · #ff2400 · #d01a00 · #930e00 · #5b0300

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.

#fb9300 · #fa6e00 · #ff2400 · #e0034b · #bd0066 · #980473

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.

#d0a242 · #ff2400 · #cc1900 · #6a4c00 · #6c0600 · #2a1c00

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.

#00dcf8 · #ff2400 · #915b51 · #872417 · #5f0400 · #330000

Quiet Support

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

#d9f9ff · #c49c94 · #ff2400 · #5f767a · #48221c · #000305

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.

#e7f5f8 · #bdcdd1 · #8fa2a6 · #102a2f · #00080b · #ff2400

Complementary

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

#d9f9ff · #00bcd4 · #ff2400 · #007f90 · #00363e · #080000

Split-complementary

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

#cfdeba · #71a3d5 · #ff2400 · #3d6666 · #354138 · #180c03

Triadic

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

#d3ffdc · #00c862 · #ff2400 · #4454fe · #190090 · #000200

Tetradic

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

#eafac2 · #98b600 · #ff2400 · #007f90 · #3f0071 · #000305

Tints, shades & muted variants

Tints

#FF6049 · #FF8570 · #FFA392 · #FFBFB2 · #FFD9D1

Shades

#D31B00 · #A91200 · #810A00 · #5C0300 · #390000

Muted

#EA4E38 · #D46654 · #BC776A

Using Scarlet

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.