#C51D66
Closest named color: Dark Hot Pink (#D90166). oklch(54.2% 0.204 2), rgb(197, 29, 102).
Aa
White text reads best on this color (5.61:1).
About this color
#C51D66 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.204 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Hot Pink (#D90166), ΔE 0.039 away. White text reads best on it, at 5.61:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Dark Hot Pink (#D90166) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #C51D66 |
| RGB | rgb(197, 29, 102) |
| HSL | hsl(334, 74%, 44%) |
| OKLCH | oklch(54.2% 0.204 2) |
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 #C51D66 | 5.61:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #C51D66 | 3.74:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #C51D66 text on white | 5.61:1 | AA | Lc 76.2 | Fine for body text |
| #C51D66 text on black | 3.74:1 | AA large text | Lc -25.5 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3E8
oklch(93.6% 0.026 2.8)
-
Step 200
200
#F7CCD6
oklch(88.5% 0.05 2.5)
-
Step 300
300
#F3A8BC
oklch(80.9% 0.091 1.9)
-
Step 400
400
#E97699
oklch(70.7% 0.146 2.2)
-
Step 500
500
#DF4C80
oklch(63.2% 0.187 2.4)
-
Step 600
600 (this color)
#C51D66
oklch(54.2% 0.204 2)
-
Step 700
700
#AE1258
oklch(49.1% 0.189 2.2)
-
Step 800
800
#8D1548
oklch(42.6% 0.157 2)
-
Step 900
900
#721C3C
oklch(37.8% 0.122 2.5)
-
Step 950
950
#431223
oklch(27% 0.077 2.4)
#C51D66 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) | #4B5367 | 0.231 |
| Deuteranopia (no green cones) | #777362 | 0.207 |
| Tritanopia (no blue cones) | #D70040 | 0.062 |
| Achromatopsia (no color) | #686868 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C51D66
#C51D66
oklch(54.2% 0.204 2)
- #008174
#008174
oklch(54.2% 0.097 182.7)
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 #C51D66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Hot Pink #D90166 ΔE 0.039
- Ruby #CA0147 ΔE 0.044
- Lipstick #D5174E ΔE 0.049
- Cerise #DE0C62 ΔE 0.050
- Medium Violet Red #C71585 ΔE 0.050
- Dark Pink #CB416B ΔE 0.050
- Rose Red #BE013C ΔE 0.059
- Deep Rose #C74767 ΔE 0.060
Use #C51D66 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.