#D51E2E
Closest named color: Crimson (#DC143C). oklch(56.1% 0.213 24.3), rgb(213, 30, 46).
Aa
White text reads best on this color (5.17:1).
About this color
#D51E2E is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.213 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.021 away. White text reads best on it, at 5.17:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.213) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.05:1 |
| White text | 5.17:1 |
Values
| HEX | #D51E2E |
| RGB | rgb(213, 30, 46) |
| HSL | hsl(355, 75%, 48%) |
| OKLCH | oklch(56.1% 0.213 24.3) |
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 #D51E2E | 5.17:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #D51E2E | 4.05:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #D51E2E text on white | 5.17:1 | AA | Lc 73.6 | Content text, not long reading |
| #D51E2E text on black | 4.05:1 | AA large text | Lc -28.1 | 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
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F8A8A2
oklch(80.8% 0.096 24.1)
-
Step 400
400
#F17670
oklch(70.8% 0.153 24.6)
-
Step 500
500
#E8494A
oklch(63.1% 0.196 24.4)
-
Step 600
600 (this color)
#D51E2E
oklch(56.1% 0.213 24.3)
-
Step 700
700
#B6021F
oklch(49% 0.197 24.4)
-
Step 800
800
#940F1C
oklch(42.7% 0.164 24.3)
-
Step 900
900
#771A1D
oklch(37.8% 0.127 24.2)
-
Step 950
950
#461111
oklch(26.9% 0.081 24.4)
#D51E2E 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) | #5D542C | 0.234 |
| Deuteranopia (no green cones) | #897B26 | 0.213 |
| Tritanopia (no blue cones) | #EB0027 | 0.042 |
| Achromatopsia (no color) | #6D6D6D | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D51E2E
#D51E2E
oklch(56.1% 0.213 24.3)
- #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 #D51E2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.021
- Cherry #CF0234 ΔE 0.025
- Lipstick #D5174E ΔE 0.040
- Ruby #CA0147 ΔE 0.048
- Lipstick Red #C0022F ΔE 0.052
- Imperial Red #E63946 ΔE 0.052
- Faded Red #D3494E ΔE 0.054
- Dull Red #BB3F3F ΔE 0.055
Use #D51E2E 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.