#B83C1A
Closest named color: Sinopia (#BB3E03). oklch(53.1% 0.166 35.5), rgb(184, 60, 26).
Aa
White text reads best on this color (5.67:1).
About this color
#B83C1A is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.166 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.013 away. White text reads best on it, at 5.67:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #B83C1A |
| RGB | rgb(184, 60, 26) |
| HSL | hsl(13, 75%, 41%) |
| OKLCH | oklch(53.1% 0.166 35.5) |
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 #B83C1A | 5.67:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #B83C1A | 3.69:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #B83C1A text on white | 5.67:1 | AA | Lc 77.3 | Fine for body text |
| #B83C1A text on black | 3.69:1 | AA large text | Lc -24.5 | 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
#E0846C
oklch(70.6% 0.119 35.5)
-
Step 500
500
#D56144
oklch(63% 0.153 35.2)
-
Step 600
600 (this color)
#B83C1A
oklch(53.1% 0.166 35.5)
-
Step 700
700
#A63515
oklch(49.2% 0.154 35.7)
-
Step 800
800
#872D15
oklch(42.8% 0.128 35.5)
-
Step 900
900
#6C2A18
oklch(37.7% 0.099 36.1)
-
Step 950
950
#40190F
oklch(27% 0.064 35.5)
#B83C1A 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) | #615514 | 0.170 |
| Deuteranopia (no green cones) | #7F7113 | 0.155 |
| Tritanopia (no blue cones) | #CB1236 | 0.065 |
| Achromatopsia (no color) | #676767 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B83C1A
#B83C1A
oklch(53.1% 0.166 35.5)
- #00798E
#00798E
oklch(53% 0.094 215.4)
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 #B83C1A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.013
- Rusty Red #AF2F0D ΔE 0.031
- Dull Red #BB3F3F ΔE 0.035
- Brick Orange #C14A09 ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.044
- Cinnamon #AC4F06 ΔE 0.045
- Firebrick #B22222 ΔE 0.045
- Burnt Siena #B75203 ΔE 0.047
Use #B83C1A 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.