#B25523
Closest named color: Burnt Siena (#B75203). oklch(55.7% 0.136 45.7), rgb(178, 85, 35).
Aa
White text reads best on this color (4.98:1).
About this color
#B25523 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 56%, its chroma 0.136 and its hue 46°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.016 away. White text reads best on it, at 4.98:1.
| Hue family | Browns |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.136) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #B25523 |
| RGB | rgb(178, 85, 35) |
| HSL | hsl(21, 67%, 42%) |
| OKLCH | oklch(55.7% 0.136 45.7) |
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 #B25523 | 4.98:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #B25523 | 4.21:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #B25523 text on white | 4.98:1 | AA | Lc 73.9 | Content text, not long reading |
| #B25523 text on black | 4.21:1 | 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
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F5E7E0
oklch(93.7% 0.018 48.5)
-
Step 200
200
#EDD3C7
oklch(88.5% 0.033 46.4)
-
Step 300
300
#E3B5A0
oklch(80.9% 0.061 45.8)
-
Step 400
400
#D48D6C
oklch(70.8% 0.098 45.6)
-
Step 500
500
#C66F44
oklch(63.1% 0.124 45.9)
-
Step 600
600 (this color)
#B25523
oklch(55.7% 0.136 45.7)
-
Step 700
700
#994415
oklch(49.1% 0.127 45.2)
-
Step 800
800
#7C3915
oklch(42.7% 0.105 45.7)
-
Step 900
900
#643218
oklch(37.7% 0.081 46.4)
-
Step 950
950
#3B1E0F
oklch(27.1% 0.052 47)
#B25523 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) | #6F631C | 0.125 |
| Deuteranopia (no green cones) | #867821 | 0.114 |
| Tritanopia (no blue cones) | #C4414B | 0.074 |
| Achromatopsia (no color) | #707070 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B25523
#B25523
oklch(55.7% 0.136 45.7)
- #007FA3
#007FA3
oklch(55.6% 0.107 226.4)
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 #B25523, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.016
- Cinnamon #AC4F06 ΔE 0.022
- Burnt Orange #C04E01 ΔE 0.028
- Brick Orange #C14A09 ΔE 0.032
- Orangey Brown #B16002 ΔE 0.034
- Copper #B66325 ΔE 0.034
- Raw Umber #A75E09 ΔE 0.035
- Rust Orange #C45508 ΔE 0.035
Use #B25523 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.