#C02B37
Closest named color: Dull Red (#BB3F3F). oklch(53.2% 0.184 22.3), rgb(192, 43, 55).
Aa
White text reads best on this color (5.76:1).
About this color
#C02B37 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.184 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.028 away. White text reads best on it, at 5.76:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #C02B37 |
| RGB | rgb(192, 43, 55) |
| HSL | hsl(355, 63%, 46%) |
| OKLCH | oklch(53.2% 0.184 22.3) |
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 #C02B37 | 5.76:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #C02B37 | 3.64:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #C02B37 text on white | 5.76:1 | AA | Lc 77.3 | Fine for body text |
| #C02B37 text on black | 3.64:1 | AA large text | Lc -24.4 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F6CECB
oklch(88.5% 0.046 23.1)
-
Step 300
300
#F2ACA8
oklch(81% 0.083 22.7)
-
Step 400
400
#E87D7A
oklch(70.8% 0.133 22.7)
-
Step 500
500
#DD5658
oklch(63.1% 0.169 22.5)
-
Step 600
600 (this color)
#C02B37
oklch(53.2% 0.184 22.3)
-
Step 700
700
#AD2530
oklch(49.2% 0.171 22.4)
-
Step 800
800
#8C2128
oklch(42.6% 0.142 22.4)
-
Step 900
900
#712225
oklch(37.7% 0.111 22.1)
-
Step 950
950
#431616
oklch(27.2% 0.07 22.9)
#C02B37 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) | #585136 | 0.202 |
| Deuteranopia (no green cones) | #7D7132 | 0.184 |
| Tritanopia (no blue cones) | #D30031 | 0.040 |
| Achromatopsia (no color) | #666666 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C02B37
#C02B37
oklch(53.2% 0.184 22.3)
- #007B83
#007B83
oklch(53.1% 0.09 202.8)
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 #C02B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.028
- Lipstick Red #C0022F ΔE 0.030
- Cherry #CF0234 ΔE 0.034
- Scarlet #BE0119 ΔE 0.036
- Rose Red #BE013C ΔE 0.037
- Firebrick #B22222 ΔE 0.038
- Ruby #CA0147 ΔE 0.042
- Dusty Red #B9484E ΔE 0.045
Use #C02B37 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.