#C10B10
Closest named color: Scarlet (#BE0119). oklch(51.3% 0.205 28.1), rgb(193, 11, 16).
Aa
White text reads best on this color (6.31:1).
About this color
#C10B10 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.205 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.011 away. White text reads best on it, at 6.31:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.32:1 |
| White text | 6.31:1 |
Values
| HEX | #C10B10 |
| RGB | rgb(193, 11, 16) |
| HSL | hsl(358, 89%, 40%) |
| OKLCH | oklch(51.3% 0.205 28.1) |
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 #C10B10 | 6.31:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #C10B10 | 3.32:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #C10B10 text on white | 6.31:1 | AA | Lc 79.0 | Fine for body text |
| #C10B10 text on black | 3.32:1 | AA large text | Lc -22.8 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FAA89D
oklch(80.9% 0.099 27.8)
-
Step 400
400
#F37466
oklch(70.6% 0.159 28.2)
-
Step 500
500
#EB463B
oklch(63.1% 0.203 28.2)
-
Step 600
600
#D61215
oklch(55.5% 0.22 28.2)
-
Step 700
700 (this color)
#C10B10
oklch(51.3% 0.205 28.1)
-
Step 800
800
#96080B
oklch(42.6% 0.17 28.1)
-
Step 900
900
#791713
oklch(37.7% 0.133 28)
-
Step 950
950
#47110D
oklch(27% 0.083 28.2)
#C10B10 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) | #52480B | 0.225 |
| Deuteranopia (no green cones) | #7B6D00 | 0.202 |
| Tritanopia (no blue cones) | #D50013 | 0.041 |
| Achromatopsia (no color) | #606060 | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C10B10
#C10B10
oklch(51.3% 0.205 28.1)
- #007481
#007481
oklch(51.1% 0.088 208.4)
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 #C10B10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.011
- Lipstick Red #C0022F ΔE 0.027
- Firebrick #B22222 ΔE 0.031
- Rufous #AE2012 ΔE 0.038
- Cherry #CF0234 ΔE 0.042
- Rusty Red #AF2F0D ΔE 0.043
- Rose Red #BE013C ΔE 0.044
- Rust Red #AA2704 ΔE 0.048
Use #C10B10 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.