#C21B5E
Closest named color: Ruby (#CA0147). oklch(53.4% 0.2 4.6), rgb(194, 27, 94).
Aa
White text reads best on this color (5.81:1).
About this color
#C21B5E is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.200 and its hue 5°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.035 away. White text reads best on it, at 5.81:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #C21B5E |
| RGB | rgb(194, 27, 94) |
| HSL | hsl(336, 76%, 43%) |
| OKLCH | oklch(53.4% 0.2 4.6) |
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 #C21B5E | 5.81:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #C21B5E | 3.61:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #C21B5E text on white | 5.81:1 | AA | Lc 77.2 | Fine for body text |
| #C21B5E text on black | 3.61:1 | AA large text | Lc -24.5 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E7
oklch(93.6% 0.026 5.7)
-
Step 200
200
#F7CCD5
oklch(88.5% 0.05 4.1)
-
Step 300
300
#F3A8B9
oklch(80.8% 0.091 4.4)
-
Step 400
400
#E97795
oklch(70.7% 0.143 4.7)
-
Step 500
500
#DF4D7B
oklch(63.1% 0.184 4.8)
-
Step 600
600 (this color)
#C21B5E
oklch(53.4% 0.2 4.6)
-
Step 700
700
#AE1553
oklch(49.1% 0.186 4.7)
-
Step 800
800
#8D1744
oklch(42.6% 0.154 4.6)
-
Step 900
900
#721D39
oklch(37.8% 0.12 5.1)
-
Step 950
950
#431322
oklch(27.1% 0.075 4.4)
#C21B5E 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) | #4B515F | 0.228 |
| Deuteranopia (no green cones) | #76715A | 0.205 |
| Tritanopia (no blue cones) | #D4003B | 0.058 |
| Achromatopsia (no color) | #656565 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C21B5E
#C21B5E
oklch(53.4% 0.2 4.6)
- #007E74
#007E74
oklch(53.3% 0.094 185.2)
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 #C21B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.035
- Dark Hot Pink #D90166 ΔE 0.046
- Lipstick #D5174E ΔE 0.046
- Rose Red #BE013C ΔE 0.047
- Raspberry #B00149 ΔE 0.051
- Dark Pink #CB416B ΔE 0.055
- Cerise #DE0C62 ΔE 0.055
- Cherry #CF0234 ΔE 0.060
Use #C21B5E 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.