#D51F19
Closest named color: Crimson (#DC143C). oklch(55.9% 0.214 28.7), rgb(213, 31, 25).
Aa
White text reads best on this color (5.19:1).
About this color
#D51F19 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.214 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.036 away. White text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.03:1 |
| White text | 5.19:1 |
Values
| HEX | #D51F19 |
| RGB | rgb(213, 31, 25) |
| HSL | hsl(2, 79%, 47%) |
| OKLCH | oklch(55.9% 0.214 28.7) |
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 #D51F19 | 5.19:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #D51F19 | 4.03:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #D51F19 text on white | 5.19:1 | AA | Lc 73.7 | Content text, not long reading |
| #D51F19 text on black | 4.03:1 | AA large text | Lc -28.0 | 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
#FCE3DF
oklch(93.5% 0.028 28.5)
-
Step 200
200
#FBCDC5
oklch(88.6% 0.054 29.6)
-
Step 300
300
#F9A99D
oklch(80.9% 0.097 28.8)
-
Step 400
400
#F17667
oklch(70.6% 0.154 28.7)
-
Step 500
500
#E84A3D
oklch(63% 0.197 28.6)
-
Step 600
600 (this color)
#D51F19
oklch(55.9% 0.214 28.7)
-
Step 700
700
#B70507
oklch(49.1% 0.199 28.7)
-
Step 800
800
#94100D
oklch(42.6% 0.164 28.6)
-
Step 900
900
#771A14
oklch(37.6% 0.128 28.6)
-
Step 950
950
#46120D
oklch(27% 0.081 29)
#D51F19 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) | #5F5414 | 0.232 |
| Deuteranopia (no green cones) | #8A7A07 | 0.209 |
| Tritanopia (no blue cones) | #EB0021 | 0.043 |
| Achromatopsia (no color) | #6D6D6D | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D51F19
#D51F19
oklch(55.9% 0.214 28.7)
- #008392
#008392
oklch(55.8% 0.096 208.8)
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 #D51F19, closest first.
No curated palette has a color within ΔE 0.04 of #D51F19.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.036
- Cherry #CF0234 ΔE 0.036
- Tomato Red #EC2D01 ΔE 0.053
- Scarlet #BE0119 ΔE 0.056
- Lipstick #D5174E ΔE 0.056
- Lipstick Red #C0022F ΔE 0.057
- Dull Red #BB3F3F ΔE 0.058
- Imperial Red #E63946 ΔE 0.058
Use #D51F19 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.