#BC370E
Closest named color: Sinopia (#BB3E03). oklch(53.2% 0.176 35.6), rgb(188, 55, 14).
Aa
White text reads best on this color (5.68:1).
About this color
#BC370E is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.176 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 5.68:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #BC370E |
| RGB | rgb(188, 55, 14) |
| HSL | hsl(14, 86%, 40%) |
| OKLCH | oklch(53.2% 0.176 35.6) |
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 #BC370E | 5.68:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #BC370E | 3.69:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #BC370E text on white | 5.68:1 | AA | Lc 77.2 | Fine for body text |
| #BC370E text on black | 3.69:1 | AA large text | Lc -24.6 | 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
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F5D0C6
oklch(88.6% 0.044 35.6)
-
Step 300
300
#EFAF9E
oklch(80.9% 0.079 35.4)
-
Step 400
400
#E48268
oklch(70.8% 0.127 35.8)
-
Step 500
500
#D95E3E
oklch(63.1% 0.162 35.6)
-
Step 600
600 (this color)
#BC370E
oklch(53.2% 0.176 35.6)
-
Step 700
700
#A93009
oklch(49.1% 0.163 35.8)
-
Step 800
800
#89290E
oklch(42.6% 0.135 35.5)
-
Step 900
900
#6E2715
oklch(37.6% 0.105 35.3)
-
Step 950
950
#41180D
oklch(27% 0.067 36)
#BC370E 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) | #605403 | 0.181 |
| Deuteranopia (no green cones) | #807200 | 0.165 |
| Tritanopia (no blue cones) | #D00030 | 0.065 |
| Achromatopsia (no color) | #676767 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC370E
#BC370E
oklch(53.2% 0.176 35.6)
- #007A8F
#007A8F
oklch(53.3% 0.094 215.3)
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 #BC370E, 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 0.032
- Brick Orange #C14A09 ΔE 0.038
- Dull Red #BB3F3F ΔE 0.039
- Firebrick #B22222 ΔE 0.045
- Burnt Orange #C04E01 ΔE 0.046
- Rust Red #AA2704 ΔE 0.049
- Rufous #AE2012 ΔE 0.049
Use #BC370E 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.