#C83037
Closest named color: Dull Red (#BB3F3F). oklch(55% 0.188 23.8), rgb(200, 48, 55).
Aa
White text reads best on this color (5.33:1).
About this color
#C83037 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.188 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.029 away. White text reads best on it, at 5.33:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #C83037 |
| RGB | rgb(200, 48, 55) |
| HSL | hsl(357, 61%, 49%) |
| OKLCH | oklch(55% 0.188 23.8) |
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 #C83037 | 5.33:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #C83037 | 3.93:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #C83037 text on white | 5.33:1 | AA | Lc 75.1 | Fine for body text |
| #C83037 text on black | 3.93:1 | AA large text | Lc -26.6 | 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
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F7CECA
oklch(88.5% 0.047 24.6)
-
Step 300
300
#F3ABA6
oklch(80.8% 0.086 23.6)
-
Step 400
400
#E97C77
oklch(70.7% 0.135 23.8)
-
Step 500
500
#DF5554
oklch(63.2% 0.173 23.8)
-
Step 600
600 (this color)
#C83037
oklch(55% 0.188 23.8)
-
Step 700
700
#AE222B
oklch(49% 0.175 23.8)
-
Step 800
800
#8D2025
oklch(42.6% 0.144 23.6)
-
Step 900
900
#722222
oklch(37.8% 0.113 24.3)
-
Step 950
950
#431515
oklch(27% 0.072 23.2)
#C83037 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) | #5E5636 | 0.204 |
| Deuteranopia (no green cones) | #847732 | 0.187 |
| Tritanopia (no blue cones) | #DC0034 | 0.043 |
| Achromatopsia (no color) | #6B6B6B | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C83037
#C83037
oklch(55% 0.188 23.8)
- #00818B
#00818B
oklch(55% 0.094 204.4)
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 #C83037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.029
- Cherry #CF0234 ΔE 0.032
- Crimson #DC143C ΔE 0.042
- Dusty Red #B9484E ΔE 0.043
- Lipstick Red #C0022F ΔE 0.044
- Lipstick #D5174E ΔE 0.046
- Ruby #CA0147 ΔE 0.047
- Scarlet #BE0119 ΔE 0.049
Use #C83037 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.