#BC3B1B
Closest named color: Sinopia (#BB3E03). oklch(53.7% 0.171 34.6), rgb(188, 59, 27).
Aa
White text reads best on this color (5.55:1).
About this color
#BC3B1B is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.171 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 5.55:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #BC3B1B |
| RGB | rgb(188, 59, 27) |
| HSL | hsl(12, 75%, 42%) |
| OKLCH | oklch(53.7% 0.171 34.6) |
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 #BC3B1B | 5.55:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #BC3B1B | 3.77:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #BC3B1B text on white | 5.55:1 | AA | Lc 76.6 | Fine for body text |
| #BC3B1B text on black | 3.77:1 | AA large text | Lc -25.1 | 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
#F4D0C7
oklch(88.6% 0.043 34.3)
-
Step 300
300
#EEAFA0
oklch(80.9% 0.077 33.8)
-
Step 400
400
#E2836B
oklch(70.7% 0.123 35.1)
-
Step 500
500
#D75F43
oklch(63% 0.158 34.5)
-
Step 600
600 (this color)
#BC3B1B
oklch(53.7% 0.171 34.6)
-
Step 700
700
#A83214
oklch(49.2% 0.159 34.7)
-
Step 800
800
#882B14
oklch(42.7% 0.131 34.8)
-
Step 900
900
#6E2818
oklch(37.7% 0.103 34.3)
-
Step 950
950
#40190F
oklch(27% 0.064 35.5)
#BC3B1B 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) | #615615 | 0.177 |
| Deuteranopia (no green cones) | #817313 | 0.161 |
| Tritanopia (no blue cones) | #CF0A35 | 0.065 |
| Achromatopsia (no color) | #686868 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC3B1B
#BC3B1B
oklch(53.7% 0.171 34.6)
- #007B90
#007B90
oklch(53.7% 0.095 215.1)
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 #BC3B1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.013
- Dull Red #BB3F3F ΔE 0.033
- Brick Orange #C14A09 ΔE 0.034
- Rusty Red #AF2F0D ΔE 0.036
- Burnt Orange #C04E01 ΔE 0.042
- Firebrick #B22222 ΔE 0.048
- Burnt Siena #B75203 ΔE 0.048
- Cinnamon #AC4F06 ΔE 0.050
Use #BC3B1B 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.