#BB4D37
Closest named color: Brick Orange (#C14A09). oklch(56.1% 0.147 33.1), rgb(187, 77, 55).
Aa
White text reads best on this color (4.96:1).
About this color
#BB4D37 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.147 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.031 away. White text reads best on it, at 4.96:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.147) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #BB4D37 |
| RGB | rgb(187, 77, 55) |
| HSL | hsl(10, 55%, 47%) |
| OKLCH | oklch(56.1% 0.147 33.1) |
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 #BB4D37 | 4.96:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #BB4D37 | 4.22:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #BB4D37 text on white | 4.96:1 | AA | Lc 73.6 | Content text, not long reading |
| #BB4D37 text on black | 4.22:1 | AA large text | Lc -28.1 | 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
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#F0D1CA
oklch(88.5% 0.036 32.8)
-
Step 300
300
#E8B2A5
oklch(80.9% 0.066 33.9)
-
Step 400
400
#DA8775
oklch(70.6% 0.106 33)
-
Step 500
500
#CE6751
oklch(63.1% 0.135 33.4)
-
Step 600
600 (this color)
#BB4D37
oklch(56.1% 0.147 33.1)
-
Step 700
700
#9F3C28
oklch(49.1% 0.136 33.2)
-
Step 800
800
#813222
oklch(42.6% 0.113 33.2)
-
Step 900
900
#682D21
oklch(37.6% 0.088 33)
-
Step 950
950
#3D1B14
oklch(26.9% 0.055 32.9)
#BB4D37 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) | #6B6134 | 0.149 |
| Deuteranopia (no green cones) | #867934 | 0.138 |
| Tritanopia (no blue cones) | #CD3548 | 0.058 |
| Achromatopsia (no color) | #707070 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB4D37
#BB4D37
oklch(56.1% 0.147 33.1)
- #008397
#008397
oklch(56% 0.098 213.2)
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 #BB4D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.031
- Dull Red #BB3F3F ΔE 0.032
- Dusty Red #B9484E ΔE 0.034
- Burnt Orange #C04E01 ΔE 0.035
- Sinopia #BB3E03 ΔE 0.037
- Burnt Siena #B75203 ΔE 0.040
- Rust Orange #C45508 ΔE 0.044
- Cinnamon #AC4F06 ΔE 0.048
Use #BB4D37 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.