#C04237
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.164 28.5), rgb(192, 66, 55).
Aa
White text reads best on this color (5.15:1).
About this color
#C04237 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.164 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.017 away. White text reads best on it, at 5.15:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #C04237 |
| RGB | rgb(192, 66, 55) |
| HSL | hsl(5, 55%, 48%) |
| OKLCH | oklch(55.5% 0.164 28.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #C04237 | 5.15:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #C04237 | 4.07:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #C04237 text on white | 5.15:1 | AA | Lc 74.5 | Content text, not long reading |
| #C04237 text on black | 4.07:1 | AA large text | Lc -27.2 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F3D0CA
oklch(88.6% 0.04 29.4)
-
Step 300
300
#EDAFA6
oklch(80.9% 0.074 28.1)
-
Step 400
400
#E08376
oklch(70.7% 0.117 28.8)
-
Step 500
500
#D56053
oklch(63.1% 0.15 28.5)
-
Step 600
600 (this color)
#C04237
oklch(55.5% 0.164 28.5)
-
Step 700
700
#A6332A
oklch(49.2% 0.152 28.4)
-
Step 800
800
#862C24
oklch(42.7% 0.125 28.5)
-
Step 900
900
#6C2922
oklch(37.7% 0.097 28.5)
-
Step 950
950
#401914
oklch(27.1% 0.062 29.2)
#C04237 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #655C35 | 0.172 |
| Deuteranopia (no green cones) | #847733 | 0.158 |
| Tritanopia (no blue cones) | #D32140 | 0.054 |
| Achromatopsia (no color) | #6D6D6D | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C04237
#C04237
oklch(55.5% 0.164 28.5)
- #008290
#008290
oklch(55.5% 0.095 208)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #C04237, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.017
- Dusty Red #B9484E ΔE 0.028
- Sinopia #BB3E03 ΔE 0.036
- Brick Orange #C14A09 ΔE 0.040
- Burnt Orange #C04E01 ΔE 0.047
- Faded Red #D3494E ΔE 0.048
- Dark Coral #CF524E ΔE 0.049
- Dark Rose #B5485D ΔE 0.051
Use #C04237 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.