#C10B4B
Closest named color: Ruby (#CA0147). oklch(52.1% 0.204 11.1), rgb(193, 11, 75).
Aa
White text reads best on this color (6.14:1).
About this color
#C10B4B is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.204 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 6.14:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #C10B4B |
| RGB | rgb(193, 11, 75) |
| HSL | hsl(339, 89%, 40%) |
| OKLCH | oklch(52.1% 0.204 11.1) |
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 #C10B4B | 6.14:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #C10B4B | 3.41:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #C10B4B text on white | 6.14:1 | AA | Lc 78.4 | Fine for body text |
| #C10B4B text on black | 3.41:1 | AA large text | Lc -23.4 | 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 700.
-
Step 50
50
#FEF2F3
oklch(97.1% 0.013 11.5)
-
Step 100
100
#FCE3E5
oklch(93.7% 0.028 12.1)
-
Step 200
200
#FBCBD0
oklch(88.5% 0.055 11.2)
-
Step 300
300
#F9A6B1
oklch(80.9% 0.099 10.8)
-
Step 400
400
#F17288
oklch(70.7% 0.157 11.2)
-
Step 500
500
#E8436A
oklch(63.1% 0.201 11.4)
-
Step 600
600
#D30952
oklch(55.5% 0.219 11.2)
-
Step 700
700 (this color)
#C10B4B
oklch(52.1% 0.204 11.1)
-
Step 800
800
#940337
oklch(42.7% 0.169 11.2)
-
Step 900
900
#771530
oklch(37.7% 0.132 10.9)
-
Step 950
950
#460F1C
oklch(26.9% 0.084 10.9)
#C10B4B 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) | #4B4B4C | 0.230 |
| Deuteranopia (no green cones) | #766E46 | 0.210 |
| Tritanopia (no blue cones) | #D4002D | 0.054 |
| Achromatopsia (no color) | #626262 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C10B4B
#C10B4B
oklch(52.1% 0.204 11.1)
- #007976
#007976
oklch(52% 0.089 191.7)
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 #C10B4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.019
- Rose Red #BE013C ΔE 0.020
- Lipstick Red #C0022F ΔE 0.035
- Raspberry #B00149 ΔE 0.038
- Cherry #CF0234 ΔE 0.042
- Lipstick #D5174E ΔE 0.044
- Rouge #AB1239 ΔE 0.051
- Scarlet #BE0119 ΔE 0.055
Use #C10B4B 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.