#C01000
Closest named color: Scarlet (#BE0119). oklch(51.2% 0.204 30.2), rgb(192, 16, 0).
Aa
White text reads best on this color (6.33:1).
About this color
#C01000 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.204 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.017 away. White text reads best on it, at 6.33:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #C01000 |
| RGB | rgb(192, 16, 0) |
| HSL | hsl(5, 100%, 38%) |
| OKLCH | oklch(51.2% 0.204 30.2) |
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 #C01000 | 6.33:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #C01000 | 3.31:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #C01000 text on white | 6.33:1 | AA | Lc 79.1 | Fine for body text |
| #C01000 text on black | 3.31:1 | AA large text | Lc -22.7 | 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
#FCE3DF
oklch(93.5% 0.028 28.5)
-
Step 200
200
#FBCCC4
oklch(88.4% 0.055 29.4)
-
Step 300
300
#FAA99B
oklch(81% 0.098 30.2)
-
Step 400
400
#F37563
oklch(70.7% 0.159 29.9)
-
Step 500
500
#EA4835
oklch(63.1% 0.202 30.2)
-
Step 600
600
#D61704
oklch(55.7% 0.22 30.2)
-
Step 700
700 (this color)
#C01000
oklch(51.2% 0.204 30.2)
-
Step 800
800
#960C01
oklch(42.7% 0.169 30.3)
-
Step 900
900
#78190F
oklch(37.7% 0.131 30.2)
-
Step 950
950
#47110B
oklch(27% 0.084 29.8)
#C01000 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) | #534800 | 0.221 |
| Deuteranopia (no green cones) | #7B6C00 | 0.196 |
| Tritanopia (no blue cones) | #D40012 | 0.041 |
| Achromatopsia (no color) | #606060 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C01000
#C01000
oklch(51.2% 0.204 30.2)
- #007483
#007483
oklch(51.2% 0.089 210.4)
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 #C01000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.017
- Firebrick #B22222 ΔE 0.031
- Lipstick Red #C0022F ΔE 0.034
- Rufous #AE2012 ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.039
- Rust Red #AA2704 ΔE 0.044
- Cherry #CF0234 ΔE 0.048
- Rose Red #BE013C ΔE 0.051
Use #C01000 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.