#B45A33
Closest named color: Burnt Siena (#B75203). oklch(56.9% 0.128 42.9), rgb(180, 90, 51).
Aa
White text reads best on this color (4.71:1).
About this color
#B45A33 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.128 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Siena (#B75203), ΔE 0.028 away. White text reads best on it, at 4.71:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Burnt Siena (#B75203) |
| Black text | 4.45:1 |
| White text | 4.71:1 |
Values
| HEX | #B45A33 |
| RGB | rgb(180, 90, 51) |
| HSL | hsl(18, 56%, 45%) |
| OKLCH | oklch(56.9% 0.128 42.9) |
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 #B45A33 | 4.71:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #B45A33 | 4.45:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #B45A33 text on white | 4.71:1 | AA | Lc 72.3 | Content text, not long reading |
| #B45A33 text on black | 4.45:1 | AA large text | Lc -29.4 | 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
#F4E7E1
oklch(93.7% 0.016 46.6)
-
Step 200
200
#EDD3C9
oklch(88.6% 0.032 42.2)
-
Step 300
300
#E2B5A3
oklch(80.9% 0.058 42.9)
-
Step 400
400
#D28E72
oklch(70.8% 0.092 43.2)
-
Step 500
500
#C4704C
oklch(63.1% 0.118 43.4)
-
Step 600
600 (this color)
#B45A33
oklch(56.9% 0.128 42.9)
-
Step 700
700
#974621
oklch(49.2% 0.12 43.2)
-
Step 800
800
#7A3A1E
oklch(42.7% 0.098 42.9)
-
Step 900
900
#63321E
oklch(37.7% 0.077 42.3)
-
Step 950
950
#3A1E12
oklch(27% 0.049 43.5)
#B45A33 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) | #73672F | 0.119 |
| Deuteranopia (no green cones) | #887B31 | 0.110 |
| Tritanopia (no blue cones) | #C54851 | 0.066 |
| Achromatopsia (no color) | #737373 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B45A33
#B45A33
oklch(56.9% 0.128 42.9)
- #0084A4
#0084A4
oklch(56.9% 0.106 222.7)
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 #B45A33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Siena #B75203 ΔE 0.028
- Copper #B66325 ΔE 0.028
- Burnt Orange #C04E01 ΔE 0.034
- Rust Orange #C45508 ΔE 0.035
- Orangey Brown #B16002 ΔE 0.037
- Earth #A2653E ΔE 0.038
- Brick Orange #C14A09 ΔE 0.038
- Cinnamon #AC4F06 ΔE 0.038
Use #B45A33 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.