#D51F3E
Closest named color: Crimson (#DC143C). oklch(56.3% 0.211 19.8), rgb(213, 31, 62).
Aa
White text reads best on this color (5.12:1).
About this color
#D51F3E is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.211 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.014 away. White text reads best on it, at 5.12:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.211) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.09:1 |
| White text | 5.12:1 |
Values
| HEX | #D51F3E |
| RGB | rgb(213, 31, 62) |
| HSL | hsl(350, 75%, 48%) |
| OKLCH | oklch(56.3% 0.211 19.8) |
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 #D51F3E | 5.12:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #D51F3E | 4.09:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #D51F3E text on white | 5.12:1 | AA | Lc 73.4 | Content text, not long reading |
| #D51F3E text on black | 4.09:1 | AA large text | Lc -28.3 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FACCCB
oklch(88.5% 0.052 19.6)
-
Step 300
300
#F8A8A7
oklch(80.9% 0.095 20.1)
-
Step 400
400
#F07579
oklch(70.7% 0.152 19.7)
-
Step 500
500
#E74957
oklch(63.2% 0.194 19.8)
-
Step 600
600 (this color)
#D51F3E
oklch(56.3% 0.211 19.8)
-
Step 700
700
#B6022E
oklch(49.2% 0.197 19.9)
-
Step 800
800
#930F27
oklch(42.6% 0.162 19.8)
-
Step 900
900
#761924
oklch(37.6% 0.126 19.7)
-
Step 950
950
#461115
oklch(27% 0.081 20.2)
#D51F3E 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) | #5C553E | 0.233 |
| Deuteranopia (no green cones) | #887B38 | 0.213 |
| Tritanopia (no blue cones) | #EA002E | 0.042 |
| Achromatopsia (no color) | #6E6E6E | 0.213 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D51F3E
#D51F3E
oklch(56.3% 0.211 19.8)
- #00868B
#00868B
oklch(56.3% 0.096 199.4)
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 #D51F3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.014
- Cherry #CF0234 ΔE 0.023
- Lipstick #D5174E ΔE 0.023
- Ruby #CA0147 ΔE 0.037
- Imperial Red #E63946 ΔE 0.050
- Faded Red #D3494E ΔE 0.051
- Lipstick Red #C0022F ΔE 0.052
- Cerise #DE0C62 ΔE 0.054
Use #D51F3E 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.