#C83729
Closest named color: Dull Red (#BB3F3F). oklch(55.5% 0.184 29.6), rgb(200, 55, 41).
Aa
White text reads best on this color (5.20:1).
About this color
#C83729 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.184 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.031 away. White text reads best on it, at 5.20:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.184) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #C83729 |
| RGB | rgb(200, 55, 41) |
| HSL | hsl(5, 66%, 47%) |
| OKLCH | oklch(55.5% 0.184 29.6) |
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 #C83729 | 5.20:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #C83729 | 4.03:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #C83729 text on white | 5.20:1 | AA | Lc 74.5 | Content text, not long reading |
| #C83729 text on black | 4.03:1 | AA large text | Lc -27.2 | 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
#F6CFC8
oklch(88.6% 0.045 29.9)
-
Step 300
300
#F1ADA1
oklch(80.9% 0.082 30.2)
-
Step 400
400
#E77E6F
oklch(70.6% 0.132 29.3)
-
Step 500
500
#DD5848
oklch(63.1% 0.17 29.5)
-
Step 600
600 (this color)
#C83729
oklch(55.5% 0.184 29.6)
-
Step 700
700
#AD281C
oklch(49.2% 0.171 29.7)
-
Step 800
800
#8C241A
oklch(42.7% 0.141 29.6)
-
Step 900
900
#71241B
oklch(37.8% 0.111 29.8)
-
Step 950
950
#421611
oklch(26.9% 0.07 29)
#C83729 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) | #635826 | 0.195 |
| Deuteranopia (no green cones) | #867822 | 0.179 |
| Tritanopia (no blue cones) | #DC0035 | 0.054 |
| Achromatopsia (no color) | #6D6D6D | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C83729
#C83729
oklch(55.5% 0.184 29.6)
- #008292
#008292
oklch(55.6% 0.096 209.8)
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 #C83729, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.031
- Sinopia #BB3E03 ΔE 0.037
- Brick Orange #C14A09 ΔE 0.043
- Dusty Red #B9484E ΔE 0.047
- Cherry #CF0234 ΔE 0.048
- Faded Red #D3494E ΔE 0.050
- Burnt Orange #C04E01 ΔE 0.052
- Crimson #DC143C ΔE 0.053
Use #C83729 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.