#C42109
Closest named color: Scarlet (#BE0119). oklch(52.8% 0.199 31.1), rgb(196, 33, 9).
Aa
White text reads best on this color (5.88:1).
About this color
#C42109 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.199 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Scarlet (#BE0119), ΔE 0.030 away. White text reads best on it, at 5.88:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.199) |
| Temperature | warm |
| Nearest name | Scarlet (#BE0119) |
| Black text | 3.56:1 |
| White text | 5.88:1 |
Values
| HEX | #C42109 |
| RGB | rgb(196, 33, 9) |
| HSL | hsl(8, 91%, 40%) |
| OKLCH | oklch(52.8% 0.199 31.1) |
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 #C42109 | 5.88:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #C42109 | 3.56:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #C42109 text on white | 5.88:1 | AA | Lc 77.5 | Fine for body text |
| #C42109 text on black | 3.56:1 | AA large text | Lc -24.3 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC5
oklch(88.5% 0.049 32.1)
-
Step 300
300
#F5AB9D
oklch(80.8% 0.09 31)
-
Step 400
400
#EC7B67
oklch(70.7% 0.143 31.4)
-
Step 500
500
#E3533D
oklch(63.2% 0.183 31.3)
-
Step 600
600 (this color)
#C42109
oklch(52.8% 0.199 31.1)
-
Step 700
700
#B21D07
oklch(49.2% 0.185 31.2)
-
Step 800
800
#901D0D
oklch(42.7% 0.153 31.2)
-
Step 900
900
#742014
oklch(37.7% 0.12 31.2)
-
Step 950
950
#44140D
oklch(26.9% 0.076 30.9)
#C42109 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) | #594E00 | 0.215 |
| Deuteranopia (no green cones) | #807100 | 0.191 |
| Tritanopia (no blue cones) | #D9001F | 0.045 |
| Achromatopsia (no color) | #646464 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C42109
#C42109
oklch(52.8% 0.199 31.1)
- #007989
#007989
oklch(52.8% 0.092 210.8)
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 #C42109, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Scarlet #BE0119 ΔE 0.030
- Firebrick #B22222 ΔE 0.040
- Sinopia #BB3E03 ΔE 0.040
- Lipstick Red #C0022F ΔE 0.041
- Rusty Red #AF2F0D ΔE 0.042
- Cherry #CF0234 ΔE 0.045
- Rufous #AE2012 ΔE 0.046
- Dull Red #BB3F3F ΔE 0.048
Use #C42109 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.