#CE3637
Closest named color: Dull Red (#BB3F3F). oklch(56.6% 0.189 25.3), rgb(206, 54, 55).
Aa
White text reads best on this color (4.99:1).
About this color
#CE3637 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.189 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.036 away. White text reads best on it, at 4.99:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #CE3637 |
| RGB | rgb(206, 54, 55) |
| HSL | hsl(360, 61%, 51%) |
| OKLCH | oklch(56.6% 0.189 25.3) |
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 #CE3637 | 4.99:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #CE3637 | 4.20:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #CE3637 text on white | 4.99:1 | AA | Lc 73.2 | Content text, not long reading |
| #CE3637 text on black | 4.20:1 | AA large text | Lc -28.5 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CEC9
oklch(88.5% 0.047 26.2)
-
Step 300
300
#F3ACA5
oklch(81% 0.085 25.4)
-
Step 400
400
#E97C74
oklch(70.7% 0.136 25.4)
-
Step 500
500
#DF5550
oklch(63.1% 0.174 25.4)
-
Step 600
600 (this color)
#CE3637
oklch(56.6% 0.189 25.3)
-
Step 700
700
#AF2227
oklch(49.2% 0.176 25.2)
-
Step 800
800
#8E2021
oklch(42.8% 0.146 25.5)
-
Step 900
900
#722220
oklch(37.8% 0.113 25.6)
-
Step 950
950
#431513
oklch(26.9% 0.072 25.6)
#CE3637 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) | #635B35 | 0.205 |
| Deuteranopia (no green cones) | #897B32 | 0.186 |
| Tritanopia (no blue cones) | #E30038 | 0.049 |
| Achromatopsia (no color) | #6F6F6F | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CE3637
#CE3637
oklch(56.6% 0.189 25.3)
- #008691
#008691
oklch(56.6% 0.097 204.9)
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 #CE3637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.036
- Faded Red #D3494E ΔE 0.037
- Crimson #DC143C ΔE 0.038
- Cherry #CF0234 ΔE 0.041
- Dark Coral #CF524E ΔE 0.047
- Dusty Red #B9484E ΔE 0.047
- Lipstick #D5174E ΔE 0.049
- Imperial Red #E63946 ΔE 0.051
Use #CE3637 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.