#C31C01
Closest named color: Scarlet (#BE0119). oklch(52.3% 0.201 31.3), rgb(195, 28, 1).
Aa
White text reads best on this color (6.02:1).
About this color
#C31C01 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.201 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.026 away. White text reads best on it, at 6.02:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.201) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #C31C01 |
| RGB | rgb(195, 28, 1) |
| HSL | hsl(8, 99%, 38%) |
| OKLCH | oklch(52.3% 0.201 31.3) |
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 #C31C01 | 6.02:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #C31C01 | 3.48:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #C31C01 text on white | 6.02:1 | AA | Lc 78.0 | Fine for body text |
| #C31C01 text on black | 3.48:1 | AA large text | Lc -23.8 | 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
#FCE3DE
oklch(93.5% 0.028 31.1)
-
Step 200
200
#FBCDC3
oklch(88.5% 0.054 32.4)
-
Step 300
300
#F9A99A
oklch(80.9% 0.098 31)
-
Step 400
400
#F27761
oklch(70.8% 0.156 31.7)
-
Step 500
500
#E94A33
oklch(63.1% 0.199 31.2)
-
Step 600
600
#D41F00
oklch(55.6% 0.215 31.3)
-
Step 700
700 (this color)
#C31C01
oklch(52.3% 0.201 31.3)
-
Step 800
800
#941200
oklch(42.6% 0.165 31.3)
-
Step 900
900
#781A0D
oklch(37.8% 0.131 31.2)
-
Step 950
950
#47120A
oklch(27.1% 0.083 31.4)
#C31C01 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) | #574C00 | 0.217 |
| Deuteranopia (no green cones) | #7E7000 | 0.194 |
| Tritanopia (no blue cones) | #D8001B | 0.044 |
| Achromatopsia (no color) | #636363 | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C31C01
#C31C01
oklch(52.3% 0.201 31.3)
- #007788
#007788
oklch(52.2% 0.091 212)
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 #C31C01, closest first.
No curated palette has a color within ΔE 0.04 of #C31C01.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.026
- Firebrick #B22222 ΔE 0.037
- Lipstick Red #C0022F ΔE 0.040
- Rusty Red #AF2F0D ΔE 0.040
- Sinopia #BB3E03 ΔE 0.043
- Rufous #AE2012 ΔE 0.043
- Cherry #CF0234 ΔE 0.046
- Rust Red #AA2704 ΔE 0.050
Use #C31C01 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.