#B1553A
Closest named color: Burnt Siena (#B75203). oklch(55.8% 0.127 37.1), rgb(177, 85, 58).
Aa
White text reads best on this color (4.96:1).
About this color
#B1553A is a medium-dark, moderately saturated red. In OKLCH its lightness is 56%, its chroma 0.127 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.035 away. White text reads best on it, at 4.96:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.22:1 |
| White text | 4.96:1 |
Values
| HEX | #B1553A |
| RGB | rgb(177, 85, 58) |
| HSL | hsl(14, 51%, 46%) |
| OKLCH | oklch(55.8% 0.127 37.1) |
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 #B1553A | 4.96:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #B1553A | 4.22:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #B1553A text on white | 4.96:1 | AA | Lc 73.9 | Content text, not long reading |
| #B1553A text on black | 4.22:1 | AA large text | Lc -27.8 | 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
#FAF4F2
oklch(97.1% 0.007 39.5)
-
Step 100
100
#F4E6E2
oklch(93.5% 0.016 36.5)
-
Step 200
200
#EDD2CB
oklch(88.4% 0.032 34.9)
-
Step 300
300
#E3B4A7
oklch(80.9% 0.058 36)
-
Step 400
400
#D38C78
oklch(70.7% 0.092 36.4)
-
Step 500
500
#C56E55
oklch(63.1% 0.117 36.9)
-
Step 600
600 (this color)
#B1553A
oklch(55.8% 0.127 37.1)
-
Step 700
700
#97442C
oklch(49% 0.118 36.9)
-
Step 800
800
#7B3925
oklch(42.8% 0.098 37.6)
-
Step 900
900
#633123
oklch(37.6% 0.076 36.5)
-
Step 950
950
#3A1D15
oklch(26.9% 0.048 36.3)
#B1553A 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) | #6D6337 | 0.125 |
| Deuteranopia (no green cones) | #847838 | 0.115 |
| Tritanopia (no blue cones) | #C2434F | 0.058 |
| Achromatopsia (no color) | #707070 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B1553A
#B1553A
oklch(55.8% 0.127 37.1)
- #00829A
#00829A
oklch(55.9% 0.1 216.8)
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 #B1553A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.035
- Sienna #A0522D ΔE 0.037
- Cinnamon #AC4F06 ΔE 0.038
- Burnt Orange #C04E01 ΔE 0.041
- Brick Orange #C14A09 ΔE 0.041
- Earth #A2653E ΔE 0.043
- Dusty Red #B9484E ΔE 0.045
- Copper #B66325 ΔE 0.045
Use #B1553A 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.