#D52537
Closest named color: Crimson (#DC143C). oklch(56.6% 0.208 22.7), rgb(213, 37, 55).
Aa
White text reads best on this color (5.06:1).
About this color
#D52537 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.208 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.018 away. White text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.208) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #D52537 |
| RGB | rgb(213, 37, 55) |
| HSL | hsl(354, 70%, 49%) |
| OKLCH | oklch(56.6% 0.208 22.7) |
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 #D52537 | 5.06:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #D52537 | 4.14:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #D52537 text on white | 5.06:1 | AA | Lc 73.1 | Content text, not long reading |
| #D52537 text on black | 4.14:1 | AA large text | Lc -28.6 | 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
#FACCC9
oklch(88.4% 0.052 22.6)
-
Step 300
300
#F7A9A5
oklch(80.9% 0.093 22.6)
-
Step 400
400
#EF7674
oklch(70.6% 0.15 22.6)
-
Step 500
500
#E64B50
oklch(63.1% 0.191 22.8)
-
Step 600
600 (this color)
#D52537
oklch(56.6% 0.208 22.7)
-
Step 700
700
#B50B27
oklch(49.1% 0.193 22.7)
-
Step 800
800
#931321
oklch(42.7% 0.16 22.9)
-
Step 900
900
#761B20
oklch(37.7% 0.125 22.8)
-
Step 950
950
#461213
oklch(27.1% 0.08 23.1)
#D52537 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) | #5E5736 | 0.229 |
| Deuteranopia (no green cones) | #897C30 | 0.209 |
| Tritanopia (no blue cones) | #EB002E | 0.042 |
| Achromatopsia (no color) | #6F6F6F | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D52537
#D52537
oklch(56.6% 0.208 22.7)
- #00868F
#00868F
oklch(56.5% 0.096 203.1)
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 #D52537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.018
- Cherry #CF0234 ΔE 0.028
- Lipstick #D5174E ΔE 0.034
- Ruby #CA0147 ΔE 0.046
- Imperial Red #E63946 ΔE 0.047
- Faded Red #D3494E ΔE 0.047
- Red Pantone #EF233C ΔE 0.052
- Dull Red #BB3F3F ΔE 0.053
Use #D52537 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.