#D91B31
Closest named color: Crimson (#DC143C). oklch(56.7% 0.217 23.5), rgb(217, 27, 49).
Aa
White text reads best on this color (5.05:1).
About this color
#D91B31 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.217 and its hue 23°. 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 5.05:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.217) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #D91B31 |
| RGB | rgb(217, 27, 49) |
| HSL | hsl(353, 78%, 48%) |
| OKLCH | oklch(56.7% 0.217 23.5) |
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 #D91B31 | 5.05:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #D91B31 | 4.15:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #D91B31 text on white | 5.05:1 | AA | Lc 72.8 | Content text, not long reading |
| #D91B31 text on black | 4.15:1 | AA large text | Lc -28.9 | 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
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#FAA8A2
oklch(81% 0.098 24.1)
-
Step 400
400
#F27471
oklch(70.6% 0.156 23.2)
-
Step 500
500
#EA464B
oklch(63.1% 0.2 23.4)
-
Step 600
600 (this color)
#D91B31
oklch(56.7% 0.217 23.5)
-
Step 700
700
#B70022
oklch(49.2% 0.199 23.5)
-
Step 800
800
#95091D
oklch(42.6% 0.167 23.3)
-
Step 900
900
#78181D
oklch(37.8% 0.13 23.6)
-
Step 950
950
#471112
oklch(27.1% 0.082 23.5)
#D91B31 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) | #5E5530 | 0.239 |
| Deuteranopia (no green cones) | #8B7C29 | 0.216 |
| Tritanopia (no blue cones) | #EF0027 | 0.042 |
| Achromatopsia (no color) | #6F6F6F | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D91B31
#D91B31
oklch(56.7% 0.217 23.5)
- #008790
#008790
oklch(56.8% 0.097 203.1)
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 #D91B31, 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 0.028
- Lipstick #D5174E ΔE 0.037
- Imperial Red #E63946 ΔE 0.046
- Red Pantone #EF233C ΔE 0.048
- Ruby #CA0147 ΔE 0.050
- Faded Red #D3494E ΔE 0.054
- Tomato Red #EC2D01 ΔE 0.055
Use #D91B31 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.