#A15739
Closest named color: Sienna (#A0522D). oklch(53.8% 0.107 42.3), rgb(161, 87, 57).
Aa
White text reads best on this color (5.33:1).
About this color
#A15739 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 54%, its chroma 0.107 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.015 away. White text reads best on it, at 5.33:1.
| Hue family | Browns |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.107) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.93:1 |
| White text | 5.33:1 |
Values
| HEX | #A15739 |
| RGB | rgb(161, 87, 57) |
| HSL | hsl(17, 48%, 43%) |
| OKLCH | oklch(53.8% 0.107 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 #A15739 | 5.33:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #A15739 | 3.93:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #A15739 text on white | 5.33:1 | AA | Lc 76.2 | Fine for body text |
| #A15739 text on black | 3.93:1 | AA large text | Lc -25.5 | 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
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#E9D4CC
oklch(88.5% 0.026 42.1)
-
Step 300
300
#DDB7A9
oklch(80.9% 0.048 41.2)
-
Step 400
400
#CA917B
oklch(70.7% 0.076 42)
-
Step 500
500
#BC7559
oklch(63.2% 0.099 42.2)
-
Step 600
600 (this color)
#A15739
oklch(53.8% 0.107 42.3)
-
Step 700
700
#8F4C30
oklch(49.2% 0.099 42.7)
-
Step 800
800
#743E29
oklch(42.6% 0.082 41.6)
-
Step 900
900
#5E3525
oklch(37.6% 0.065 41.9)
-
Step 950
950
#372016
oklch(27.1% 0.04 44.1)
#A15739 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) | #6B6136 | 0.099 |
| Deuteranopia (no green cones) | #7D7138 | 0.090 |
| Tritanopia (no blue cones) | #B04950 | 0.057 |
| Achromatopsia (no color) | #6B6B6B | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A15739
#A15739
oklch(53.8% 0.107 42.3)
- #007A97
#007A97
oklch(53.7% 0.099 222.1)
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 #A15739, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.015
- Sepia #985E2B ΔE 0.031
- Earth #A2653E ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.037
- Raw Umber #A75E09 ΔE 0.045
- Burnt Umber #A0450E ΔE 0.046
- Warm Brown #964E02 ΔE 0.048
- Cocoa #875F42 ΔE 0.048
Use #A15739 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.