#D10B23
Closest named color: Cherry (#CF0234). oklch(54.5% 0.217 25.2), rgb(209, 11, 35).
Aa
White text reads best on this color (5.55:1).
About this color
#D10B23 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.217 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Cherry (#CF0234), ΔE 0.019 away. White text reads best on it, at 5.55:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.217) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.78:1 |
| White text | 5.55:1 |
Values
| HEX | #D10B23 |
| RGB | rgb(209, 11, 35) |
| HSL | hsl(353, 90%, 43%) |
| OKLCH | oklch(54.5% 0.217 25.2) |
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 #D10B23 | 5.55:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #D10B23 | 3.78:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #D10B23 text on white | 5.55:1 | AA | Lc 75.2 | Fine for body text |
| #D10B23 text on black | 3.78:1 | AA large text | Lc -26.5 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC7
oklch(88.5% 0.054 25.3)
-
Step 300
300
#FAA8A1
oklch(81% 0.098 24.8)
-
Step 400
400
#F2756D
oklch(70.7% 0.155 25.5)
-
Step 500
500
#EA4746
oklch(63.2% 0.2 25.3)
-
Step 600
600 (this color)
#D10B23
oklch(54.5% 0.217 25.2)
-
Step 700
700
#B7001B
oklch(49.1% 0.199 25.2)
-
Step 800
800
#950A18
oklch(42.6% 0.167 25.1)
-
Step 900
900
#78181A
oklch(37.7% 0.13 25.2)
-
Step 950
950
#471110
oklch(27.1% 0.083 25.5)
#D10B23 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) | #584F21 | 0.240 |
| Deuteranopia (no green cones) | #857618 | 0.216 |
| Tritanopia (no blue cones) | #E7001A | 0.045 |
| Achromatopsia (no color) | #686868 | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D10B23
#D10B23
oklch(54.5% 0.217 25.2)
- #007F8A
#007F8A
oklch(54.4% 0.093 205.4)
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 #D10B23, closest first.
No curated palette has a color within ΔE 0.04 of #D10B23.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.019
- Crimson #DC143C ΔE 0.033
- Lipstick Red #C0022F ΔE 0.040
- Scarlet #BE0119 ΔE 0.042
- Ruby #CA0147 ΔE 0.045
- Lipstick #D5174E ΔE 0.047
- Rose Red #BE013C ΔE 0.051
- Dull Red #BB3F3F ΔE 0.057
Use #D10B23 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.