#BB4528
Closest named color: Sinopia (#BB3E03). oklch(54.9% 0.158 34.9), rgb(187, 69, 40).
Aa
White text reads best on this color (5.25:1).
About this color
#BB4528 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.158 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.020 away. White text reads best on it, at 5.25:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #BB4528 |
| RGB | rgb(187, 69, 40) |
| HSL | hsl(12, 65%, 45%) |
| OKLCH | oklch(54.9% 0.158 34.9) |
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 #BB4528 | 5.25:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #BB4528 | 3.99:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #BB4528 text on white | 5.25:1 | AA | Lc 75.2 | Fine for body text |
| #BB4528 text on black | 3.99:1 | AA large text | Lc -26.5 | 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
#F7E5E1
oklch(93.5% 0.021 32.5)
-
Step 200
200
#F2D1C8
oklch(88.6% 0.039 35.7)
-
Step 300
300
#EBB1A2
oklch(81% 0.071 35)
-
Step 400
400
#DE866F
oklch(70.8% 0.114 35.5)
-
Step 500
500
#D26449
oklch(63.1% 0.145 35)
-
Step 600
600 (this color)
#BB4528
oklch(54.9% 0.158 34.9)
-
Step 700
700
#A3381D
oklch(49.1% 0.147 35)
-
Step 800
800
#842F1A
oklch(42.6% 0.122 35)
-
Step 900
900
#6B2B1C
oklch(37.7% 0.095 34.5)
-
Step 950
950
#3F1A11
oklch(27% 0.06 34.9)
#BB4528 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) | #665B24 | 0.162 |
| Deuteranopia (no green cones) | #847624 | 0.147 |
| Tritanopia (no blue cones) | #CE263F | 0.063 |
| Achromatopsia (no color) | #6C6C6C | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #BB4528
#BB4528
oklch(54.9% 0.158 34.9)
- #007F94
#007F94
oklch(54.9% 0.097 214.6)
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 #BB4528, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.020
- Brick Orange #C14A09 ΔE 0.026
- Dull Red #BB3F3F ΔE 0.030
- Burnt Orange #C04E01 ΔE 0.033
- Burnt Siena #B75203 ΔE 0.038
- Dusty Red #B9484E ΔE 0.042
- Cinnamon #AC4F06 ΔE 0.043
- Rust Orange #C45508 ΔE 0.047
Use #BB4528 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.