#D51C28
Closest named color: Crimson (#DC143C). oklch(55.9% 0.214 25.6), rgb(213, 28, 40).
Aa
White text reads best on this color (5.21:1).
About this color
#D51C28 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.214 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.025 away. White text reads best on it, at 5.21:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #D51C28 |
| RGB | rgb(213, 28, 40) |
| HSL | hsl(356, 77%, 47%) |
| OKLCH | oklch(55.9% 0.214 25.6) |
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 #D51C28 | 5.21:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #D51C28 | 4.02:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #D51C28 text on white | 5.21:1 | AA | Lc 73.8 | Content text, not long reading |
| #D51C28 text on black | 4.02:1 | AA large text | Lc -27.9 | 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
#F9A8A1
oklch(80.9% 0.097 24.9)
-
Step 400
400
#F1756D
oklch(70.6% 0.154 25.5)
-
Step 500
500
#E84946
oklch(63% 0.196 25.7)
-
Step 600
600 (this color)
#D51C28
oklch(55.9% 0.214 25.6)
-
Step 700
700
#B7011A
oklch(49.1% 0.199 25.5)
-
Step 800
800
#950E18
oklch(42.8% 0.165 25.5)
-
Step 900
900
#77191A
oklch(37.6% 0.128 25.5)
-
Step 950
950
#461110
oklch(26.9% 0.081 25.4)
#D51C28 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) | #5D5326 | 0.235 |
| Deuteranopia (no green cones) | #897A1E | 0.212 |
| Tritanopia (no blue cones) | #EB0024 | 0.042 |
| Achromatopsia (no color) | #6C6C6C | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D51C28
#D51C28
oklch(55.9% 0.214 25.6)
- #00848F
#00848F
oklch(56% 0.096 205.1)
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 #D51C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.025
- Cherry #CF0234 ΔE 0.027
- Lipstick #D5174E ΔE 0.044
- Ruby #CA0147 ΔE 0.051
- Lipstick Red #C0022F ΔE 0.052
- Imperial Red #E63946 ΔE 0.055
- Scarlet #BE0119 ΔE 0.055
- Dull Red #BB3F3F ΔE 0.056
Use #D51C28 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.