#D10100
Closest named color: Cherry (#CF0234). oklch(54.1% 0.222 29.3), rgb(209, 1, 0).
Aa
White text reads best on this color (5.65:1).
About this color
#D10100 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.222 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Cherry (#CF0234), ΔE 0.034 away. White text reads best on it, at 5.65:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.222) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #D10100 |
| RGB | rgb(209, 1, 0) |
| HSL | hsl(0, 100%, 41%) |
| OKLCH | oklch(54.1% 0.222 29.3) |
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 #D10100 | 5.65:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #D10100 | 3.71:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #D10100 text on white | 5.65:1 | AA | Lc 75.4 | Fine for body text |
| #D10100 text on black | 3.71:1 | AA large text | Lc -26.4 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FAA89B
oklch(80.8% 0.099 29.3)
-
Step 400
400
#F47564
oklch(70.8% 0.159 29.4)
-
Step 500
500
#EB4637
oklch(63.1% 0.204 29.2)
-
Step 600
600 (this color)
#D10100
oklch(54.1% 0.222 29.3)
-
Step 700
700
#B80100
oklch(49.2% 0.201 29.3)
-
Step 800
800
#960804
oklch(42.6% 0.17 29.3)
-
Step 900
900
#791710
oklch(37.7% 0.134 29.2)
-
Step 950
950
#47110B
oklch(27% 0.084 29.8)
#D10100 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) | #584D00 | 0.243 |
| Deuteranopia (no green cones) | #857500 | 0.214 |
| Tritanopia (no blue cones) | #E7000B | 0.046 |
| Achromatopsia (no color) | #676767 | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D10100
#D10100
oklch(54.1% 0.222 29.3)
- #007D8C
#007D8C
oklch(54% 0.093 209.4)
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 #D10100, closest first.
No curated palette has a color within ΔE 0.04 of #D10100.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.034
- Scarlet #BE0119 ΔE 0.041
- Lipstick Red #C0022F ΔE 0.047
- Crimson #DC143C ΔE 0.047
- Ruby #CA0147 ΔE 0.060
- Sinopia #BB3E03 ΔE 0.061
- Firebrick #B22222 ΔE 0.061
- Rose Red #BE013C ΔE 0.061
Use #D10100 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.