#C42C24
Closest named color: Dull Red (#BB3F3F). oklch(53.8% 0.189 28.5), rgb(196, 44, 36).
Aa
White text reads best on this color (5.62:1).
About this color
#C42C24 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.189 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.033 away. White text reads best on it, at 5.62:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #C42C24 |
| RGB | rgb(196, 44, 36) |
| HSL | hsl(3, 69%, 45%) |
| OKLCH | oklch(53.8% 0.189 28.5) |
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 #C42C24 | 5.62:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #C42C24 | 3.73:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #C42C24 text on white | 5.62:1 | AA | Lc 76.6 | Fine for body text |
| #C42C24 text on black | 3.73:1 | AA large text | Lc -25.2 | 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
#FAE4E1
oklch(93.6% 0.025 26.9)
-
Step 200
200
#F7CEC8
oklch(88.5% 0.047 27.8)
-
Step 300
300
#F3ACA2
oklch(80.9% 0.085 28)
-
Step 400
400
#E97D6F
oklch(70.7% 0.136 28.6)
-
Step 500
500
#DF5648
oklch(63.1% 0.174 28.8)
-
Step 600
600 (this color)
#C42C24
oklch(53.8% 0.189 28.5)
-
Step 700
700
#AF231D
oklch(49.1% 0.177 28.3)
-
Step 800
800
#8E211A
oklch(42.8% 0.146 28.6)
-
Step 900
900
#72221B
oklch(37.7% 0.114 28.6)
-
Step 950
950
#431511
oklch(26.9% 0.072 27.9)
#C42C24 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) | #5C5221 | 0.204 |
| Deuteranopia (no green cones) | #81731C | 0.185 |
| Tritanopia (no blue cones) | #D8002C | 0.045 |
| Achromatopsia (no color) | #676767 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C42C24
#C42C24
oklch(53.8% 0.189 28.5)
- #007C8A
#007C8A
oklch(53.7% 0.092 208.6)
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 #C42C24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.033
- Scarlet #BE0119 ΔE 0.037
- Sinopia #BB3E03 ΔE 0.039
- Cherry #CF0234 ΔE 0.040
- Lipstick Red #C0022F ΔE 0.041
- Firebrick #B22222 ΔE 0.042
- Rusty Red #AF2F0D ΔE 0.046
- Rufous #AE2012 ΔE 0.052
Use #C42C24 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.