#C73640
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.181 21.8), rgb(199, 54, 64).
Aa
White text reads best on this color (5.21:1).
About this color
#C73640 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.181 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.025 away. White text reads best on it, at 5.21:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.03:1 |
| White text | 5.21:1 |
Values
| HEX | #C73640 |
| RGB | rgb(199, 54, 64) |
| HSL | hsl(356, 57%, 50%) |
| OKLCH | oklch(55.5% 0.181 21.8) |
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 #C73640 | 5.21:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #C73640 | 4.03:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #C73640 text on white | 5.21:1 | AA | Lc 74.6 | Content text, not long reading |
| #C73640 text on black | 4.03:1 | AA large text | Lc -27.1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F6CECC
oklch(88.5% 0.045 21.4)
-
Step 300
300
#F1ACA9
oklch(80.9% 0.082 21.8)
-
Step 400
400
#E67D7C
oklch(70.6% 0.13 21.5)
-
Step 500
500
#DC575A
oklch(63.1% 0.167 21.9)
-
Step 600
600 (this color)
#C73640
oklch(55.5% 0.181 21.8)
-
Step 700
700
#AC2732
oklch(49.2% 0.168 22)
-
Step 800
800
#8B232A
oklch(42.6% 0.139 21.9)
-
Step 900
900
#702326
oklch(37.6% 0.109 21.8)
-
Step 950
950
#421617
oklch(27% 0.069 21.5)
#C73640 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) | #5F593F | 0.198 |
| Deuteranopia (no green cones) | #84783C | 0.181 |
| Tritanopia (no blue cones) | #DB003B | 0.047 |
| Achromatopsia (no color) | #6D6D6D | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C73640
#C73640
oklch(55.5% 0.181 21.8)
- #00838A
#00838A
oklch(55.5% 0.094 201.4)
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 #C73640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.025
- Dusty Red #B9484E ΔE 0.035
- Cherry #CF0234 ΔE 0.039
- Faded Red #D3494E ΔE 0.043
- Crimson #DC143C ΔE 0.044
- Lipstick #D5174E ΔE 0.045
- Ruby #CA0147 ΔE 0.048
- Dark Rose #B5485D ΔE 0.049
Use #C73640 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.