#C04039
Closest named color: Dull Red (#BB3F3F). oklch(55.3% 0.165 27), rgb(192, 64, 57).
Aa
White text reads best on this color (5.20:1).
About this color
#C04039 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.165 and its hue 27°. 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 5.20:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.165) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #C04039 |
| RGB | rgb(192, 64, 57) |
| HSL | hsl(3, 54%, 49%) |
| OKLCH | oklch(55.3% 0.165 27) |
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 #C04039 | 5.20:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #C04039 | 4.03:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #C04039 text on white | 5.20:1 | AA | Lc 74.8 | Content text, not long reading |
| #C04039 text on black | 4.03:1 | AA large text | Lc -26.9 | 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
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F3CFCB
oklch(88.4% 0.041 25.4)
-
Step 300
300
#EDAFA7
oklch(81% 0.074 27.1)
-
Step 400
400
#E18278
oklch(70.7% 0.119 26.8)
-
Step 500
500
#D65F55
oklch(63.2% 0.152 27.1)
-
Step 600
600 (this color)
#C04039
oklch(55.3% 0.165 27)
-
Step 700
700
#A6322C
oklch(49.1% 0.153 27.3)
-
Step 800
800
#872B26
oklch(42.7% 0.127 27)
-
Step 900
900
#6D2823
oklch(37.7% 0.1 27)
-
Step 950
950
#401815
oklch(26.9% 0.063 26.5)
#C04039 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) | #635B37 | 0.176 |
| Deuteranopia (no green cones) | #837735 | 0.162 |
| Tritanopia (no blue cones) | #D31D3F | 0.052 |
| Achromatopsia (no color) | #6D6D6D | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C04039
#C04039
oklch(55.3% 0.165 27)
- #00818E
#00818E
oklch(55.1% 0.095 207.2)
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 #C04039, 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 0.027
- Sinopia #BB3E03 ΔE 0.039
- Brick Orange #C14A09 ΔE 0.045
- Faded Red #D3494E ΔE 0.048
- Dark Rose #B5485D ΔE 0.048
- Dark Coral #CF524E ΔE 0.050
- Burnt Orange #C04E01 ΔE 0.052
Use #C04039 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.