#C04243
Closest named color: Dull Red (#BB3F3F). oklch(55.7% 0.162 23.6), rgb(192, 66, 67).
Aa
White text reads best on this color (5.11:1).
About this color
#C04243 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.162 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.013 away. White text reads best on it, at 5.11:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.162) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #C04243 |
| RGB | rgb(192, 66, 67) |
| HSL | hsl(360, 50%, 51%) |
| OKLCH | oklch(55.7% 0.162 23.6) |
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 #C04243 | 5.11:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #C04243 | 4.10:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #C04243 text on white | 5.11:1 | AA | Lc 74.4 | Content text, not long reading |
| #C04243 text on black | 4.10:1 | AA large text | Lc -27.3 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F3CFCC
oklch(88.4% 0.041 23.6)
-
Step 300
300
#ECAFAA
oklch(80.9% 0.072 24.1)
-
Step 400
400
#E0827D
oklch(70.7% 0.117 23.7)
-
Step 500
500
#D45F5D
oklch(63% 0.149 23.3)
-
Step 600
600 (this color)
#C04243
oklch(55.7% 0.162 23.6)
-
Step 700
700
#A53235
oklch(49.1% 0.151 23.3)
-
Step 800
800
#862B2C
oklch(42.7% 0.125 23.5)
-
Step 900
900
#6C2828
oklch(37.7% 0.098 23)
-
Step 950
950
#401817
oklch(27% 0.063 23.6)
#C04243 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) | #645D42 | 0.173 |
| Deuteranopia (no green cones) | #837840 | 0.161 |
| Tritanopia (no blue cones) | #D22444 | 0.047 |
| Achromatopsia (no color) | #6E6E6E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C04243
#C04243
oklch(55.7% 0.162 23.6)
- #00838D
#00838D
oklch(55.6% 0.095 204.2)
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 #C04243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.013
- Dusty Red #B9484E ΔE 0.018
- Dark Rose #B5485D ΔE 0.038
- Faded Red #D3494E ΔE 0.043
- Dark Coral #CF524E ΔE 0.046
- Deep Rose #C74767 ΔE 0.049
- Sinopia #BB3E03 ΔE 0.050
- Brick Orange #C14A09 ΔE 0.053
Use #C04243 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.