#A55737
Closest named color: Sienna (#A0522D). oklch(54.3% 0.112 42.3), rgb(165, 87, 55).
Aa
White text reads best on this color (5.22:1).
About this color
#A55737 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 54%, its chroma 0.112 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.018 away. White text reads best on it, at 5.22:1.
| Hue family | Browns |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.112) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #A55737 |
| RGB | rgb(165, 87, 55) |
| HSL | hsl(17, 50%, 43%) |
| OKLCH | oklch(54.3% 0.112 42.3) |
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 #A55737 | 5.22:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #A55737 | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #A55737 text on white | 5.22:1 | AA | Lc 75.5 | Fine for body text |
| #A55737 text on black | 4.01:1 | AA large text | Lc -26.2 | 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
#F3E7E2
oklch(93.6% 0.015 44.2)
-
Step 200
200
#EAD4CB
oklch(88.6% 0.028 43.6)
-
Step 300
300
#DEB7A7
oklch(81% 0.05 43.5)
-
Step 400
400
#CC9078
oklch(70.6% 0.081 42.7)
-
Step 500
500
#BE7356
oklch(63% 0.104 41.7)
-
Step 600
600 (this color)
#A55737
oklch(54.3% 0.112 42.3)
-
Step 700
700
#914A2D
oklch(49.1% 0.105 42.2)
-
Step 800
800
#763D26
oklch(42.7% 0.087 42.1)
-
Step 900
900
#5F3524
oklch(37.7% 0.067 42.5)
-
Step 950
950
#381F15
oklch(27% 0.043 42.4)
#A55737 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) | #6C6234 | 0.104 |
| Deuteranopia (no green cones) | #7F7336 | 0.096 |
| Tritanopia (no blue cones) | #B44850 | 0.059 |
| Achromatopsia (no color) | #6C6C6C | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A55737
#A55737
oklch(54.3% 0.112 42.3)
- #007C9A
#007C9A
oklch(54.4% 0.101 222.5)
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 #A55737, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.018
- Earth #A2653E ΔE 0.033
- Cinnamon #AC4F06 ΔE 0.033
- Sepia #985E2B ΔE 0.034
- Raw Umber #A75E09 ΔE 0.042
- Burnt Siena #B75203 ΔE 0.043
- Burnt Umber #A0450E ΔE 0.047
- Orangey Brown #B16002 ΔE 0.051
Use #A55737 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.