#D81800
Closest named color: Crimson (#DC143C). oklch(56.1% 0.221 30.6), rgb(216, 24, 0).
Aa
White text reads best on this color (5.18:1).
About this color
#D81800 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.221 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.042 away. White text reads best on it, at 5.18:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.221) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.05:1 |
| White text | 5.18:1 |
Values
| HEX | #D81800 |
| RGB | rgb(216, 24, 0) |
| HSL | hsl(7, 100%, 42%) |
| OKLCH | oklch(56.1% 0.221 30.6) |
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 #D81800 | 5.18:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #D81800 | 4.05:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #D81800 text on white | 5.18:1 | AA | Lc 73.3 | Content text, not long reading |
| #D81800 text on black | 4.05:1 | AA large text | Lc -28.4 | 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
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FCCCC3
oklch(88.5% 0.056 30.5)
-
Step 300
300
#FAA89A
oklch(80.8% 0.1 30.1)
-
Step 400
400
#F37561
oklch(70.6% 0.159 30.7)
-
Step 500
500
#EB4733
oklch(63.1% 0.204 30.4)
-
Step 600
600 (this color)
#D81800
oklch(56.1% 0.221 30.6)
-
Step 700
700
#B51200
oklch(49.1% 0.194 30.6)
-
Step 800
800
#960D00
oklch(42.8% 0.169 30.6)
-
Step 900
900
#79180D
oklch(37.8% 0.133 30.5)
-
Step 950
950
#47110A
oklch(27% 0.084 30.6)
#D81800 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) | #5F5300 | 0.239 |
| Deuteranopia (no green cones) | #8B7B00 | 0.213 |
| Tritanopia (no blue cones) | #EF0019 | 0.047 |
| Achromatopsia (no color) | #6D6D6D | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D81800
#D81800
oklch(56.1% 0.221 30.6)
- #008394
#008394
oklch(55.9% 0.097 210.6)
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 #D81800, closest first.
No curated palette has a color within ΔE 0.04 of #D81800.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.042
- Cherry #CF0234 ΔE 0.044
- Tomato Red #EC2D01 ΔE 0.049
- Scarlet #BE0119 ΔE 0.061
- Red Pantone #EF233C ΔE 0.061
- Imperial Red #E63946 ΔE 0.062
- Sinopia #BB3E03 ΔE 0.063
- Lipstick Red #C0022F ΔE 0.064
Use #D81800 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.