#C83421
Closest named color: Sinopia (#BB3E03). oklch(55.1% 0.188 30.9), rgb(200, 52, 33).
Aa
White text reads best on this color (5.29:1).
About this color
#C83421 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.188 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.034 away. White text reads best on it, at 5.29:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #C83421 |
| RGB | rgb(200, 52, 33) |
| HSL | hsl(7, 72%, 46%) |
| OKLCH | oklch(55.1% 0.188 30.9) |
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 #C83421 | 5.29:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #C83421 | 3.96:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #C83421 text on white | 5.29:1 | AA | Lc 74.9 | Content text, not long reading |
| #C83421 text on black | 3.96:1 | AA large text | Lc -26.8 | 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
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F7CEC7
oklch(88.5% 0.048 29.4)
-
Step 300
300
#F2ADA0
oklch(80.9% 0.084 30.9)
-
Step 400
400
#E87E6C
oklch(70.7% 0.134 30.8)
-
Step 500
500
#DE5743
oklch(63% 0.173 30.9)
-
Step 600
600 (this color)
#C83421
oklch(55.1% 0.188 30.9)
-
Step 700
700
#AE2615
oklch(49.1% 0.175 30.8)
-
Step 800
800
#8D2215
oklch(42.6% 0.145 30.6)
-
Step 900
900
#712318
oklch(37.6% 0.112 30.9)
-
Step 950
950
#43160F
oklch(27% 0.072 31.1)
#C83421 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) | #62571D | 0.198 |
| Deuteranopia (no green cones) | #867718 | 0.180 |
| Tritanopia (no blue cones) | #DD0031 | 0.054 |
| Achromatopsia (no color) | #6B6B6B | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C83421
#C83421
oklch(55.1% 0.188 30.9)
- #008091
#008091
oklch(55% 0.095 210.9)
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 #C83421, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.034
- Dull Red #BB3F3F ΔE 0.035
- Brick Orange #C14A09 ΔE 0.043
- Cherry #CF0234 ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.051
- Dusty Red #B9484E ΔE 0.052
- Scarlet #BE0119 ΔE 0.052
- Rusty Red #AF2F0D ΔE 0.055
Use #C83421 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.