#A18129
Closest named color: Mustard Brown (#AC7E04). oklch(61.8% 0.11 88.1), rgb(161, 129, 41).
Aa
Black text reads best on this color (5.68:1).
About this color
#A18129 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 62%, its chroma 0.110 and its hue 88°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Brown (#AC7E04), ΔE 0.021 away. Black text reads best on it, at 5.68:1.
| Hue family | Browns |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.110) |
| Temperature | warm |
| Nearest name | Mustard Brown (#AC7E04) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #A18129 |
| RGB | rgb(161, 129, 41) |
| HSL | hsl(44, 59%, 40%) |
| OKLCH | oklch(61.8% 0.11 88.1) |
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 #A18129 | 3.69:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #A18129 | 5.68:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #A18129 text on white | 3.69:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #A18129 text on black | 5.68:1 | AA | Lc -37.3 | 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
#EEE9DE
oklch(93.5% 0.016 86.4)
-
Step 200
200
#E1D8C3
oklch(88.4% 0.03 87.6)
-
Step 300
300
#CFBF99
oklch(80.8% 0.054 87.9)
-
Step 400
400
#B79E60
oklch(70.8% 0.086 88.2)
-
Step 500
500 (this color)
#A18129
oklch(61.8% 0.11 88.1)
-
Step 600
600
#8F6E00
oklch(55.5% 0.114 87.7)
-
Step 700
700
#785C00
oklch(49% 0.1 87.9)
-
Step 800
800
#634B00
oklch(42.6% 0.087 87.5)
-
Step 900
900
#513F09
oklch(37.7% 0.072 88.7)
-
Step 950
950
#302509
oklch(27.1% 0.045 87.3)
#A18129 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) | #90801C | 0.031 |
| Deuteranopia (no green cones) | #98892D | 0.024 |
| Tritanopia (no blue cones) | #AF766F | 0.099 |
| Achromatopsia (no color) | #858585 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18129
#A18129
oklch(61.8% 0.11 88.1)
- #6982C8
#6982C8
oklch(61.7% 0.11 268.2)
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 #A18129, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Brown #AC7E04 ΔE 0.021
- Bronze #A87900 ΔE 0.023
- Golden Brown #B27A01 ΔE 0.031
- Dark Mustard #A88905 ΔE 0.032
- Coffee #A6814C ΔE 0.035
- Yellowy Brown #AE8B0C ΔE 0.040
- Dark Tan #AF884A ΔE 0.042
- Leather #AC7434 ΔE 0.042
Use #A18129 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.