#C81F03
Closest named color: Scarlet (#BE0119). oklch(53.4% 0.204 31.4), rgb(200, 31, 3).
Aa
White text reads best on this color (5.74:1).
About this color
#C81F03 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.204 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.035 away. White text reads best on it, at 5.74:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #C81F03 |
| RGB | rgb(200, 31, 3) |
| HSL | hsl(9, 97%, 40%) |
| OKLCH | oklch(53.4% 0.204 31.4) |
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 #C81F03 | 5.74:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #C81F03 | 3.65:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #C81F03 text on white | 5.74:1 | AA | Lc 76.7 | Fine for body text |
| #C81F03 text on black | 3.65:1 | AA large text | Lc -25.0 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC5
oklch(88.4% 0.051 30.1)
-
Step 300
300
#F6AB9C
oklch(80.9% 0.092 31.7)
-
Step 400
400
#EE7A65
oklch(70.8% 0.147 31.6)
-
Step 500
500
#E4503A
oklch(63% 0.188 31.2)
-
Step 600
600 (this color)
#C81F03
oklch(53.4% 0.204 31.4)
-
Step 700
700
#B31900
oklch(49.1% 0.189 31.4)
-
Step 800
800
#921A08
oklch(42.8% 0.157 31.4)
-
Step 900
900
#751F12
oklch(37.8% 0.122 31.5)
-
Step 950
950
#45140C
oklch(27% 0.077 31.7)
#C81F03 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) | #5A4E00 | 0.219 |
| Deuteranopia (no green cones) | #827300 | 0.196 |
| Tritanopia (no blue cones) | #DD001D | 0.044 |
| Achromatopsia (no color) | #666666 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C81F03
#C81F03
oklch(53.4% 0.204 31.4)
- #007B8C
#007B8C
oklch(53.5% 0.093 211.5)
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 #C81F03, closest first.
No curated palette has a color within ΔE 0.04 of #C81F03.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.035
- Sinopia #BB3E03 ΔE 0.042
- Cherry #CF0234 ΔE 0.043
- Lipstick Red #C0022F ΔE 0.045
- Firebrick #B22222 ΔE 0.047
- Rusty Red #AF2F0D ΔE 0.049
- Dull Red #BB3F3F ΔE 0.051
- Rufous #AE2012 ΔE 0.054
Use #C81F03 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.