#BC331F
Closest named color: Sinopia (#BB3E03). oklch(52.9% 0.177 31.4), rgb(188, 51, 31).
Aa
White text reads best on this color (5.78:1).
About this color
#BC331F is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.177 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.026 away. White text reads best on it, at 5.78:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.177) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #BC331F |
| RGB | rgb(188, 51, 31) |
| HSL | hsl(8, 72%, 43%) |
| OKLCH | oklch(52.9% 0.177 31.4) |
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 #BC331F | 5.78:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #BC331F | 3.63:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #BC331F text on white | 5.78:1 | AA | Lc 77.6 | Fine for body text |
| #BC331F text on black | 3.63:1 | AA large text | Lc -24.2 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E1
oklch(93.7% 0.023 31.1)
-
Step 200
200
#F5CFC7
oklch(88.5% 0.044 31.9)
-
Step 300
300
#F0AEA1
oklch(80.9% 0.08 31.4)
-
Step 400
400
#E5806E
oklch(70.7% 0.128 31.2)
-
Step 500
500
#DA5C47
oklch(63.1% 0.163 31.5)
-
Step 600
600 (this color)
#BC331F
oklch(52.9% 0.177 31.4)
-
Step 700
700
#AA2D1B
oklch(49.1% 0.164 31.3)
-
Step 800
800
#8A2719
oklch(42.6% 0.136 31.1)
-
Step 900
900
#6F261B
oklch(37.7% 0.106 31.1)
-
Step 950
950
#411710
oklch(26.8% 0.067 31.4)
#BC331F 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) | #5D521B | 0.186 |
| Deuteranopia (no green cones) | #7E7117 | 0.171 |
| Tritanopia (no blue cones) | #CF0030 | 0.054 |
| Achromatopsia (no color) | #666666 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BC331F
#BC331F
oklch(52.9% 0.177 31.4)
- #00798A
#00798A
oklch(52.9% 0.092 211.7)
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 #BC331F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.026
- Rusty Red #AF2F0D ΔE 0.031
- Dull Red #BB3F3F ΔE 0.031
- Firebrick #B22222 ΔE 0.035
- Scarlet #BE0119 ΔE 0.041
- Rufous #AE2012 ΔE 0.043
- Rust Red #AA2704 ΔE 0.046
- Brick Orange #C14A09 ΔE 0.048
Use #BC331F 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.