Stop `#C33A36`

Stop (#C33A36) is a mid-tone, saturated red with an OKLCH hue of 26°, lightness 0.55 and chroma 0.175. 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	`#C33A36`
RGB	`rgb(195, 58, 54)`
HSL	`hsl(2, 57%, 49%)`
HSV	`hsv(2, 72%, 76%)`
CMYK	`cmyk(0%, 70%, 72%, 24%)`
CIE Lab	`lab(45.5 54 34.1)`
OKLCH	`oklch(0.551 0.175 26)`

How Stop behaves under real light

Under warm 2700K interior light Stop 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): → #c43531 — ΔE 0.7, is virtually unchanged
Neutral LED (4000K task and retail lighting): → #c63934 — ΔE 0.6, is virtually unchanged
Daylight (6500K standard daylight (reference)): → #c33a36 — ΔE 0.0, is virtually unchanged
Blue-sky shade (cool daylight (~10000K proxy)): → #c43b37 — ΔE 0.3, is virtually unchanged

Test Stop 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 5.28:1 and against black 3.98:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text.

Colors that go with Stop

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.

#ffb0a7 · #f0776d · #c33a36 · #a01e1f · #6d0007 · #380001

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.

#d27e33 · #cd5d2c · #c33a36 · #a72a4b · #891f55 · #6a1858

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.

#e3a000 · #ad894f · #c33a36 · #972725 · #73040b · #301e00

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.

#00ddf1 · #b18782 · #c33a36 · #7f3b36 · #5a201c · #320d0b

Quiet Support

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

#e0f7fa · #a18581 · #c33a36 · #4c5c5e · #361c19 · #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.

#e6f5f7 · #bccdd0 · #8ea1a4 · #0f2a2d · #000709 · #c33a36

Complementary

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

#d4d8b2 · #31a9e4 · #ab708b · #c33a36 · #4f578a · #050a32

Split-complementary

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

#d1d5b0 · #72aa9e · #5990b0 · #c33a36 · #52634f · #180a02

Triadic

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

#dcfcdd · #4ba256 · #c33a36 · #2b4cb8 · #06126a · #000200

Tetradic

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

#eff7cf · #889619 · #c33a36 · #00646e · #2e005f · #000304

Tints, shades & muted variants

Tints

#D35B53 · #E2786F · #F0958B · #FDB1A8 · #FFD2CC

Shades

#A62927 · #891819 · #6E040A · #500003 · #330001

Muted

#B44C45 · #A45952 · #93645E

Using Stop

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.