#C51781
Closest named color: Medium Violet Red (#C71585). oklch(54.9% 0.218 350.8), rgb(197, 23, 129).
Aa
White text reads best on this color (5.50:1).
About this color
#C51781 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.218 and its hue 351°. Its hue sits on the warm side of the wheel. The nearest named color is Medium Violet Red (#C71585), ΔE 0.007 away. White text reads best on it, at 5.50:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.218) |
| Temperature | warm |
| Nearest name | Medium Violet Red (#C71585) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #C51781 |
| RGB | rgb(197, 23, 129) |
| HSL | hsl(323, 79%, 43%) |
| OKLCH | oklch(54.9% 0.218 350.8) |
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 #C51781 | 5.50:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #C51781 | 3.81:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #C51781 text on white | 5.50:1 | AA | Lc 75.5 | Fine for body text |
| #C51781 text on black | 3.81:1 | AA large text | Lc -26.2 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#FAE3EC
oklch(93.7% 0.028 352)
-
Step 200
200
#F7CBDE
oklch(88.5% 0.055 350.5)
-
Step 300
300
#F2A7C9
oklch(81% 0.098 350.7)
-
Step 400
400
#E773AD
oklch(70.6% 0.157 350.6)
-
Step 500
500
#DC4799
oklch(63% 0.2 350.5)
-
Step 600
600 (this color)
#C51781
oklch(54.9% 0.218 350.8)
-
Step 700
700
#AC046F
oklch(49.1% 0.202 350.8)
-
Step 800
800
#8C0F5A
oklch(42.8% 0.168 351.1)
-
Step 900
900
#70194A
oklch(37.6% 0.13 350.7)
-
Step 950
950
#42112B
oklch(27% 0.082 351.2)
#C51781 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) | #3F5683 | 0.247 |
| Deuteranopia (no green cones) | #70737D | 0.215 |
| Tritanopia (no blue cones) | #D4004E | 0.083 |
| Achromatopsia (no color) | #696969 | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C51781
#C51781
oklch(54.9% 0.218 350.8)
- #008568
#008568
oklch(54.9% 0.108 170.5)
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 #C51781, closest first.
No curated palette has a color within ΔE 0.04 of #C51781.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Violet Red #C71585 ΔE 0.007
- Dark Hot Pink #D90166 ΔE 0.059
- Cerise #DE0C62 ΔE 0.072
- Dark Pink #CB416B ΔE 0.074
- Deep Rose #C74767 ΔE 0.086
- Ruby #CA0147 ΔE 0.086
- Lipstick #D5174E ΔE 0.087
- Purpley Pink #C83CB9 ΔE 0.088
Use #C51781 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.