#D10037
Closest named color: Cherry (#CF0234). oklch(54.5% 0.219 19.6), rgb(209, 0, 55).
Aa
White text reads best on this color (5.57:1).
About this color
#D10037 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.219 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Cherry (#CF0234), ΔE 0.005 away. White text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.219) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #D10037 |
| RGB | rgb(209, 0, 55) |
| HSL | hsl(344, 100%, 41%) |
| OKLCH | oklch(54.5% 0.219 19.6) |
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 #D10037 | 5.57:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #D10037 | 3.76:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #D10037 text on white | 5.57:1 | AA | Lc 75.1 | Fine for body text |
| #D10037 text on black | 3.76:1 | AA large text | Lc -26.6 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FDE3E2
oklch(93.7% 0.029 20.3)
-
Step 200
200
#FCCBCA
oklch(88.4% 0.056 19.6)
-
Step 300
300
#FAA7A7
oklch(80.9% 0.099 19.4)
-
Step 400
400
#F37378
oklch(70.8% 0.158 19.6)
-
Step 500
500
#EA4455
oklch(63.1% 0.202 19.6)
-
Step 600
600 (this color)
#D10037
oklch(54.5% 0.219 19.6)
-
Step 700
700
#B6002F
oklch(49.1% 0.197 19.5)
-
Step 800
800
#950526
oklch(42.6% 0.168 19.4)
-
Step 900
900
#781623
oklch(37.7% 0.131 19.7)
-
Step 950
950
#471015
oklch(27.1% 0.083 19.7)
#D10037 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) | #544E37 | 0.245 |
| Deuteranopia (no green cones) | #837630 | 0.221 |
| Tritanopia (no blue cones) | #E60020 | 0.049 |
| Achromatopsia (no color) | #686868 | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D10037
#D10037
oklch(54.5% 0.219 19.6)
- #008085
#008085
oklch(54.5% 0.093 199.6)
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 #D10037, closest first.
No curated palette has a color within ΔE 0.04 of #D10037.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.005
- Ruby #CA0147 ΔE 0.026
- Crimson #DC143C ΔE 0.027
- Lipstick #D5174E ΔE 0.029
- Lipstick Red #C0022F ΔE 0.036
- Rose Red #BE013C ΔE 0.041
- Scarlet #BE0119 ΔE 0.048
- Cerise #DE0C62 ΔE 0.060
Use #D10037 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.