#B83F1B
Closest named color: Sinopia (#BB3E03). oklch(53.5% 0.163 36.3), rgb(184, 63, 27).
Aa
White text reads best on this color (5.57:1).
About this color
#B83F1B is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.163 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.011 away. White text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #B83F1B |
| RGB | rgb(184, 63, 27) |
| HSL | hsl(14, 74%, 41%) |
| OKLCH | oklch(53.5% 0.163 36.3) |
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 #B83F1B | 5.57:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #B83F1B | 3.76:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #B83F1B text on white | 5.57:1 | AA | Lc 76.9 | Fine for body text |
| #B83F1B text on black | 3.76:1 | AA large text | Lc -24.9 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E0
oklch(93.6% 0.022 35.1)
-
Step 200
200
#F3D0C7
oklch(88.5% 0.041 34.8)
-
Step 300
300
#ECB0A0
oklch(80.9% 0.074 35.5)
-
Step 400
400
#DF856C
oklch(70.7% 0.117 36.3)
-
Step 500
500
#D46344
oklch(63.2% 0.15 36.3)
-
Step 600
600 (this color)
#B83F1B
oklch(53.5% 0.163 36.3)
-
Step 700
700
#A53615
oklch(49.1% 0.152 36.2)
-
Step 800
800
#862E15
oklch(42.7% 0.126 36.1)
-
Step 900
900
#6C2A18
oklch(37.7% 0.099 36.1)
-
Step 950
950
#3F1A0F
oklch(27% 0.061 37.3)
#B83F1B 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) | #625715 | 0.167 |
| Deuteranopia (no green cones) | #807214 | 0.151 |
| Tritanopia (no blue cones) | #CB1A38 | 0.066 |
| Achromatopsia (no color) | #686868 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B83F1B
#B83F1B
oklch(53.5% 0.163 36.3)
- #007A91
#007A91
oklch(53.4% 0.095 217.1)
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 #B83F1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.011
- Brick Orange #C14A09 ΔE 0.032
- Rusty Red #AF2F0D ΔE 0.035
- Dull Red #BB3F3F ΔE 0.036
- Burnt Orange #C04E01 ΔE 0.039
- Cinnamon #AC4F06 ΔE 0.041
- Burnt Siena #B75203 ΔE 0.042
- Burnt Umber #A0450E ΔE 0.049
Use #B83F1B 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.