#BD370D
Closest named color: Sinopia (#BB3E03). oklch(53.4% 0.177 35.7), rgb(189, 55, 13).
Aa
White text reads best on this color (5.65:1).
About this color
#BD370D is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.177 and its hue 36°. 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 5.65:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #BD370D |
| RGB | rgb(189, 55, 13) |
| HSL | hsl(14, 87%, 40%) |
| OKLCH | oklch(53.4% 0.177 35.7) |
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 #BD370D | 5.65:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #BD370D | 3.71:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #BD370D text on white | 5.65:1 | AA | Lc 77.0 | Fine for body text |
| #BD370D text on black | 3.71:1 | AA large text | Lc -24.8 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F5D0C5
oklch(88.6% 0.045 37.2)
-
Step 300
300
#EFAF9D
oklch(80.9% 0.08 36.3)
-
Step 400
400
#E48268
oklch(70.8% 0.127 35.8)
-
Step 500
500
#D95E3D
oklch(63.1% 0.162 36)
-
Step 600
600 (this color)
#BD370D
oklch(53.4% 0.177 35.7)
-
Step 700
700
#AA2F07
oklch(49.2% 0.165 35.7)
-
Step 800
800
#8A290D
oklch(42.8% 0.137 35.7)
-
Step 900
900
#6F2714
oklch(37.7% 0.107 35.6)
-
Step 950
950
#41180D
oklch(27% 0.067 36)
#BD370D 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) | #605401 | 0.183 |
| Deuteranopia (no green cones) | #817200 | 0.165 |
| Tritanopia (no blue cones) | #D10030 | 0.065 |
| Achromatopsia (no color) | #676767 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BD370D
#BD370D
oklch(53.4% 0.177 35.7)
- #007A90
#007A90
oklch(53.4% 0.095 216.2)
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 #BD370D, 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 0.034
- Brick Orange #C14A09 ΔE 0.037
- Dull Red #BB3F3F ΔE 0.039
- Burnt Orange #C04E01 ΔE 0.045
- Firebrick #B22222 ΔE 0.046
- Rufous #AE2012 ΔE 0.050
- Rust Red #AA2704 ΔE 0.050
Use #BD370D 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.