#D43237
Closest named color: Crimson (#DC143C). oklch(57.3% 0.198 24.7), rgb(212, 50, 55).
Aa
White text reads best on this color (4.87:1).
About this color
#D43237 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.198 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.029 away. White text reads best on it, at 4.87:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.31:1 |
| White text | 4.87:1 |
Values
| HEX | #D43237 |
| RGB | rgb(212, 50, 55) |
| HSL | hsl(358, 65%, 51%) |
| OKLCH | oklch(57.3% 0.198 24.7) |
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 #D43237 | 4.87:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #D43237 | 4.31:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #D43237 text on white | 4.87:1 | AA | Lc 72.2 | Content text, not long reading |
| #D43237 text on black | 4.31:1 | AA large text | Lc -29.4 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F8CDC9
oklch(88.4% 0.049 24.3)
-
Step 300
300
#F5AAA4
oklch(80.8% 0.089 24.3)
-
Step 400
400
#EC7A73
oklch(70.7% 0.142 24.9)
-
Step 500
500
#E2514E
oklch(63.1% 0.181 25)
-
Step 600
600 (this color)
#D43237
oklch(57.3% 0.198 24.7)
-
Step 700
700
#B21A25
oklch(49.2% 0.184 24.6)
-
Step 800
800
#901B20
oklch(42.7% 0.152 24.7)
-
Step 900
900
#741F1F
oklch(37.7% 0.119 24.9)
-
Step 950
950
#441413
oklch(27% 0.075 24.6)
#D43237 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) | #635B35 | 0.216 |
| Deuteranopia (no green cones) | #8C7E31 | 0.197 |
| Tritanopia (no blue cones) | #E90036 | 0.044 |
| Achromatopsia (no color) | #717171 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D43237
#D43237
oklch(57.3% 0.198 24.7)
- #008893
#008893
oklch(57.2% 0.098 204.8)
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 #D43237, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.029
- Faded Red #D3494E ΔE 0.036
- Cherry #CF0234 ΔE 0.040
- Imperial Red #E63946 ΔE 0.041
- Lipstick #D5174E ΔE 0.044
- Dull Red #BB3F3F ΔE 0.048
- Dark Coral #CF524E ΔE 0.048
- Red Pantone #EF233C ΔE 0.052
Use #D43237 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.