#C40911
Closest named color: Scarlet (#BE0119). oklch(51.8% 0.208 27.9), rgb(196, 9, 17).
Aa
White text reads best on this color (6.18:1).
About this color
#C40911 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.208 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.015 away. White text reads best on it, at 6.18:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.208) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #C40911 |
| RGB | rgb(196, 9, 17) |
| HSL | hsl(357, 91%, 40%) |
| OKLCH | oklch(51.8% 0.208 27.9) |
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 #C40911 | 6.18:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #C40911 | 3.39:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #C40911 text on white | 6.18:1 | AA | Lc 78.3 | Fine for body text |
| #C40911 text on black | 3.39:1 | AA large text | Lc -23.5 | 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
#FBA89C
oklch(81% 0.1 28.5)
-
Step 400
400
#F47366
oklch(70.6% 0.161 27.7)
-
Step 500
500
#EC443B
oklch(63.1% 0.206 27.8)
-
Step 600
600
#D80A13
oklch(55.7% 0.224 28)
-
Step 700
700 (this color)
#C40911
oklch(51.8% 0.208 27.9)
-
Step 800
800
#97040A
oklch(42.7% 0.172 27.9)
-
Step 900
900
#791613
oklch(37.7% 0.134 27.7)
-
Step 950
950
#48100C
oklch(27.1% 0.086 28.3)
#C40911 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) | #53490C | 0.228 |
| Deuteranopia (no green cones) | #7D6E00 | 0.204 |
| Tritanopia (no blue cones) | #D90012 | 0.043 |
| Achromatopsia (no color) | #616161 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C40911
#C40911
oklch(51.8% 0.208 27.9)
- #007683
#007683
oklch(51.8% 0.089 208.2)
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 #C40911, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.015
- Lipstick Red #C0022F ΔE 0.028
- Firebrick #B22222 ΔE 0.036
- Cherry #CF0234 ΔE 0.037
- Rufous #AE2012 ΔE 0.044
- Rose Red #BE013C ΔE 0.044
- Rusty Red #AF2F0D ΔE 0.047
- Rust Red #AA2704 ΔE 0.054
Use #C40911 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.