#A18031
Closest named color: Mustard Brown (#AC7E04). oklch(61.6% 0.104 85.9), rgb(161, 128, 49).
Aa
Black text reads best on this color (5.64:1).
About this color
#A18031 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.104 and its hue 86°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Brown (#AC7E04), ΔE 0.025 away. Black text reads best on it, at 5.64:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.104) |
| Temperature | warm |
| Nearest name | Mustard Brown (#AC7E04) |
| Black text | 5.64:1 |
| White text | 3.71:1 |
Values
| HEX | #A18031 |
| RGB | rgb(161, 128, 49) |
| HSL | hsl(42, 53%, 41%) |
| OKLCH | oklch(61.6% 0.104 85.9) |
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 #A18031 | 3.71:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #A18031 | 5.64:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #A18031 text on white | 3.71:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #A18031 text on black | 5.64:1 | AA | Lc -37.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F7F5F0
oklch(97% 0.007 88.6)
-
Step 100
100
#EEE9DF
oklch(93.5% 0.014 84.6)
-
Step 200
200
#E1D8C5
oklch(88.4% 0.027 85.7)
-
Step 300
300
#CFBF9C
oklch(80.9% 0.05 86.3)
-
Step 400
400
#B79D64
oklch(70.6% 0.081 85.9)
-
Step 500
500 (this color)
#A18031
oklch(61.6% 0.104 85.9)
-
Step 600
600
#916D02
oklch(55.6% 0.113 85.5)
-
Step 700
700
#7A5B00
oklch(49% 0.1 85.4)
-
Step 800
800
#644B01
oklch(42.8% 0.087 86.4)
-
Step 900
900
#523F0F
oklch(37.9% 0.068 86.2)
-
Step 950
950
#30250B
oklch(27.1% 0.043 86.1)
#A18031 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) | #8F7F27 | 0.032 |
| Deuteranopia (no green cones) | #978834 | 0.025 |
| Tritanopia (no blue cones) | #AE756F | 0.092 |
| Achromatopsia (no color) | #848484 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18031
#A18031
oklch(61.6% 0.104 85.9)
- #6783C4
#6783C4
oklch(61.6% 0.104 265.7)
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 #A18031, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Brown #AC7E04 ΔE 0.025
- Bronze #A87900 ΔE 0.025
- Coffee #A6814C ΔE 0.029
- Golden Brown #B27A01 ΔE 0.032
- Tan Brown #AB7E4C ΔE 0.036
- Leather #AC7434 ΔE 0.037
- Dark Mustard #A88905 ΔE 0.038
- Puce #A57E52 ΔE 0.038
Use #A18031 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.