#D33537
Closest named color: Crimson (#DC143C). oklch(57.4% 0.195 25.3), rgb(211, 53, 55).
Aa
White text reads best on this color (4.84:1).
About this color
#D33537 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.195 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.033 away. White text reads best on it, at 4.84:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #D33537 |
| RGB | rgb(211, 53, 55) |
| HSL | hsl(359, 64%, 52%) |
| OKLCH | oklch(57.4% 0.195 25.3) |
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 #D33537 | 4.84:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #D33537 | 4.33:1 | AA large text | Lc 31.9 | Non-text elements, placeholder text |
| #D33537 text on white | 4.84:1 | AA | Lc 72.2 | Content text, not long reading |
| #D33537 text on black | 4.33:1 | AA large text | Lc -29.5 | 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
#F4ABA4
oklch(80.9% 0.087 25.3)
-
Step 400
400
#EB7B73
oklch(70.8% 0.14 25.4)
-
Step 500
500
#E1524E
oklch(63% 0.179 25.3)
-
Step 600
600 (this color)
#D33537
oklch(57.4% 0.195 25.3)
-
Step 700
700
#B01D24
oklch(49% 0.181 25.3)
-
Step 800
800
#8F1D20
oklch(42.7% 0.149 25.1)
-
Step 900
900
#73201F
oklch(37.7% 0.117 25.3)
-
Step 950
950
#441413
oklch(27% 0.075 24.6)
#D33537 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 | 0.210 |
| Deuteranopia (no green cones) | #8C7E31 | 0.193 |
| Tritanopia (no blue cones) | #E80038 | 0.047 |
| Achromatopsia (no color) | #727272 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D33537
#D33537
oklch(57.4% 0.195 25.3)
- #008994
#008994
oklch(57.5% 0.098 204.7)
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 #D33537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.033
- Faded Red #D3494E ΔE 0.033
- Imperial Red #E63946 ΔE 0.042
- Cherry #CF0234 ΔE 0.043
- Dark Coral #CF524E ΔE 0.045
- Dull Red #BB3F3F ΔE 0.046
- Lipstick #D5174E ΔE 0.047
- Pale Red #D9544D ΔE 0.053
Use #D33537 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.