#B15527
Closest named color: Burnt Siena (#B75203). oklch(55.6% 0.134 44.7), rgb(177, 85, 39).
Aa
White text reads best on this color (5.00:1).
About this color
#B15527 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.134 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.019 away. White text reads best on it, at 5.00:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.134) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #B15527 |
| RGB | rgb(177, 85, 39) |
| HSL | hsl(20, 64%, 42%) |
| OKLCH | oklch(55.6% 0.134 44.7) |
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 #B15527 | 5.00:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #B15527 | 4.19:1 | AA large text | Lc 30.0 | Non-text elements, placeholder text |
| #B15527 text on white | 5.00:1 | AA | Lc 74.0 | Content text, not long reading |
| #B15527 text on black | 4.19:1 | AA large text | Lc -27.7 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F5E7E1
oklch(93.7% 0.017 44.8)
-
Step 200
200
#EDD3C7
oklch(88.5% 0.033 46.4)
-
Step 300
300
#E3B5A1
oklch(80.9% 0.06 44.7)
-
Step 400
400
#D38D6E
oklch(70.7% 0.096 44.6)
-
Step 500
500
#C66F47
oklch(63.2% 0.123 44.6)
-
Step 600
600 (this color)
#B15527
oklch(55.6% 0.134 44.7)
-
Step 700
700
#98451A
oklch(49.1% 0.124 44.7)
-
Step 800
800
#7B3918
oklch(42.6% 0.102 44.7)
-
Step 900
900
#64321A
oklch(37.8% 0.08 45)
-
Step 950
950
#3B1E10
oklch(27.1% 0.051 45.7)
#B15527 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) | #6F6321 | 0.123 |
| Deuteranopia (no green cones) | #857725 | 0.112 |
| Tritanopia (no blue cones) | #C2414B | 0.071 |
| Achromatopsia (no color) | #6F6F6F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B15527
#B15527
oklch(55.6% 0.134 44.7)
- #007FA1
#007FA1
oklch(55.5% 0.105 225)
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 #B15527, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.019
- Cinnamon #AC4F06 ΔE 0.023
- Burnt Orange #C04E01 ΔE 0.031
- Brick Orange #C14A09 ΔE 0.034
- Sienna #A0522D ΔE 0.035
- Copper #B66325 ΔE 0.036
- Raw Umber #A75E09 ΔE 0.036
- Orangey Brown #B16002 ΔE 0.036
Use #B15527 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.