#D51A3F
Closest named color: Crimson (#DC143C). oklch(56.1% 0.214 19), rgb(213, 26, 63).
Aa
White text reads best on this color (5.18:1).
About this color
#D51A3F is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.214 and its hue 19°. 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 5.18:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #D51A3F |
| RGB | rgb(213, 26, 63) |
| HSL | hsl(348, 78%, 47%) |
| OKLCH | oklch(56.1% 0.214 19) |
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 #D51A3F | 5.18:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #D51A3F | 4.04:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #D51A3F text on white | 5.18:1 | AA | Lc 73.6 | Content text, not long reading |
| #D51A3F text on black | 4.04:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FBCCCB
oklch(88.6% 0.053 19.6)
-
Step 300
300
#F9A8A8
oklch(81% 0.096 19.4)
-
Step 400
400
#F1747A
oklch(70.7% 0.154 18.9)
-
Step 500
500
#E84758
oklch(63.1% 0.197 19)
-
Step 600
600 (this color)
#D51A3F
oklch(56.1% 0.214 19)
-
Step 700
700
#B60030
oklch(49.1% 0.197 19.1)
-
Step 800
800
#940C28
oklch(42.7% 0.164 19.2)
-
Step 900
900
#771825
oklch(37.7% 0.128 18.9)
-
Step 950
950
#461116
oklch(27% 0.081 19.1)
#D51A3F 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) | #5A543F | 0.237 |
| Deuteranopia (no green cones) | #877A39 | 0.215 |
| Tritanopia (no blue cones) | #EA002C | 0.044 |
| Achromatopsia (no color) | #6D6D6D | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D51A3F
#D51A3F
oklch(56.1% 0.214 19)
- #00858A
#00858A
oklch(56% 0.095 199.4)
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 #D51A3F, closest first.
No curated palette has a color within ΔE 0.04 of #D51A3F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.014
- Lipstick #D5174E ΔE 0.020
- Cherry #CF0234 ΔE 0.021
- Ruby #CA0147 ΔE 0.034
- Lipstick Red #C0022F ΔE 0.051
- Cerise #DE0C62 ΔE 0.051
- Imperial Red #E63946 ΔE 0.053
- Rose Red #BE013C ΔE 0.054
Use #D51A3F 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.