#C51F52
Closest named color: Ruby (#CA0147). oklch(53.8% 0.198 10.6), rgb(197, 31, 82).
Aa
White text reads best on this color (5.68:1).
About this color
#C51F52 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.198 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.019 away. White text reads best on it, at 5.68:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #C51F52 |
| RGB | rgb(197, 31, 82) |
| HSL | hsl(342, 73%, 45%) |
| OKLCH | oklch(53.8% 0.198 10.6) |
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 #C51F52 | 5.68:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #C51F52 | 3.69:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #C51F52 text on white | 5.68:1 | AA | Lc 76.7 | Fine for body text |
| #C51F52 text on black | 3.69:1 | AA large text | Lc -25.1 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FBE3E6
oklch(93.6% 0.027 9)
-
Step 200
200
#F8CCD1
oklch(88.4% 0.05 10.5)
-
Step 300
300
#F4A9B3
oklch(80.9% 0.089 10.5)
-
Step 400
400
#EA778B
oklch(70.6% 0.143 10.5)
-
Step 500
500
#E04E6F
oklch(63.1% 0.182 10.4)
-
Step 600
600 (this color)
#C51F52
oklch(53.8% 0.198 10.6)
-
Step 700
700
#AF1647
oklch(49% 0.184 10.5)
-
Step 800
800
#8E183B
oklch(42.6% 0.152 10.2)
-
Step 900
900
#731D32
oklch(37.8% 0.12 10.8)
-
Step 950
950
#44131D
oklch(27.1% 0.076 11.4)
#C51F52 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) | #515153 | 0.223 |
| Deuteranopia (no green cones) | #7B724E | 0.201 |
| Tritanopia (no blue cones) | #D80037 | 0.048 |
| Achromatopsia (no color) | #676767 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C51F52
#C51F52
oklch(53.8% 0.198 10.6)
- #007F7B
#007F7B
oklch(53.9% 0.093 190.9)
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 #C51F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.019
- Lipstick #D5174E ΔE 0.032
- Rose Red #BE013C ΔE 0.035
- Cherry #CF0234 ΔE 0.040
- Lipstick Red #C0022F ΔE 0.045
- Dark Hot Pink #D90166 ΔE 0.049
- Dark Pink #CB416B ΔE 0.052
- Cerise #DE0C62 ΔE 0.053
Use #C51F52 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.