#CB1863
Closest named color: Dark Hot Pink (#D90166). oklch(55% 0.21 4.1), rgb(203, 24, 99).
Aa
White text reads best on this color (5.45:1).
About this color
#CB1863 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.210 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Hot Pink (#D90166), ΔE 0.027 away. White text reads best on it, at 5.45:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.210) |
| Temperature | warm |
| Nearest name | Dark Hot Pink (#D90166) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #CB1863 |
| RGB | rgb(203, 24, 99) |
| HSL | hsl(335, 79%, 45%) |
| OKLCH | oklch(55% 0.21 4.1) |
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 #CB1863 | 5.45:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #CB1863 | 3.85:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #CB1863 text on white | 5.45:1 | AA | Lc 75.2 | Fine for body text |
| #CB1863 text on black | 3.85:1 | AA large text | Lc -26.5 | 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
#FEF2F4
oklch(97.1% 0.013 5.8)
-
Step 100
100
#FBE3E8
oklch(93.7% 0.027 3.4)
-
Step 200
200
#F9CBD5
oklch(88.5% 0.053 3.6)
-
Step 300
300
#F5A7B9
oklch(80.9% 0.094 4.3)
-
Step 400
400
#EC7495
oklch(70.7% 0.151 4.3)
-
Step 500
500
#E2487C
oklch(63.1% 0.193 4)
-
Step 600
600 (this color)
#CB1863
oklch(55% 0.21 4.1)
-
Step 700
700
#B10554
oklch(49.1% 0.195 3.9)
-
Step 800
800
#900F44
oklch(42.7% 0.162 4.4)
-
Step 900
900
#74193A
oklch(37.8% 0.127 3.9)
-
Step 950
950
#441122
oklch(27% 0.08 3.7)
#CB1863 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) | #4D5464 | 0.239 |
| Deuteranopia (no green cones) | #7B755F | 0.213 |
| Tritanopia (no blue cones) | #DE003D | 0.063 |
| Achromatopsia (no color) | #696969 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB1863
#CB1863
oklch(55% 0.21 4.1)
- #008478
#008478
oklch(55.1% 0.098 183.8)
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 #CB1863, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Hot Pink #D90166 ΔE 0.027
- Cerise #DE0C62 ΔE 0.038
- Lipstick #D5174E ΔE 0.038
- Ruby #CA0147 ΔE 0.038
- Dark Pink #CB416B ΔE 0.048
- Medium Violet Red #C71585 ΔE 0.056
- Deep Rose #C74767 ΔE 0.058
- Rose Red #BE013C ΔE 0.059
Use #CB1863 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.