#A18B06
Closest named color: Dark Mustard (#A88905). oklch(63.8% 0.13 97.8), rgb(161, 139, 6).
Aa
Black text reads best on this color (6.21:1).
About this color
#A18B06 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 64%, its chroma 0.130 and its hue 98°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mustard (#A88905), ΔE 0.012 away. Black text reads best on it, at 6.21:1.
| Hue family | Yellows |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.130) |
| Temperature | warm |
| Nearest name | Dark Mustard (#A88905) |
| Black text | 6.21:1 |
| White text | 3.38:1 |
Values
| HEX | #A18B06 |
| RGB | rgb(161, 139, 6) |
| HSL | hsl(51, 93%, 33%) |
| OKLCH | oklch(63.8% 0.13 97.8) |
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 #A18B06 | 3.38:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #A18B06 | 6.21:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #A18B06 text on white | 3.38:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #A18B06 text on black | 6.21:1 | AA | Lc -40.6 | 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
#F7F6EF
oklch(97.2% 0.009 100)
-
Step 100
100
#EDEADD
oklch(93.6% 0.018 96.1)
-
Step 200
200
#DFDAC0
oklch(88.5% 0.035 98.1)
-
Step 300
300
#CBC292
oklch(81% 0.065 98.7)
-
Step 400
400
#B2A152
oklch(70.7% 0.102 97.4)
-
Step 500
500 (this color)
#A18B06
oklch(63.8% 0.13 97.8)
-
Step 600
600
#867300
oklch(55.7% 0.115 97.6)
-
Step 700
700
#706000
oklch(49% 0.101 97.8)
-
Step 800
800
#5C4F00
oklch(42.8% 0.088 98.3)
-
Step 900
900
#4D4100
oklch(37.6% 0.078 97.3)
-
Step 950
950
#2E2602
oklch(27% 0.053 96.4)
#A18B06 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) | #9B8700 | 0.015 |
| Deuteranopia (no green cones) | #A08F17 | 0.010 |
| Tritanopia (no blue cones) | #AF7F76 | 0.121 |
| Achromatopsia (no color) | #8C8C8C | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18B06
#A18B06
oklch(63.8% 0.13 97.8)
- #7982D9
#7982D9
oklch(63.7% 0.13 277.6)
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 #A18B06, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mustard #A88905 ΔE 0.012
- Yellowy Brown #AE8B0C ΔE 0.022
- Mustard Brown #AC7E04 ΔE 0.038
- Dark Goldenrod #B8860B ΔE 0.040
- Dark Gold #B59410 ΔE 0.042
- Pea Soup #929901 ΔE 0.043
- Brown Yellow #B29705 ΔE 0.044
- Yellow Brown #B79400 ΔE 0.045
Use #A18B06 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.