#A18E27
Closest named color: Dark Mustard (#A88905). oklch(64.5% 0.12 98.3), rgb(161, 142, 39).
Aa
Black text reads best on this color (6.41:1).
About this color
#A18E27 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 65%, its chroma 0.120 and its hue 98°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mustard (#A88905), ΔE 0.017 away. Black text reads best on it, at 6.41:1.
| Hue family | Yellows |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Dark Mustard (#A88905) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #A18E27 |
| RGB | rgb(161, 142, 39) |
| HSL | hsl(51, 61%, 39%) |
| OKLCH | oklch(64.5% 0.12 98.3) |
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 #A18E27 | 3.27:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #A18E27 | 6.41:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #A18E27 text on white | 3.27:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #A18E27 text on black | 6.41:1 | AA | Lc -41.8 | 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
#F7F6F0
oklch(97.2% 0.008 98.9)
-
Step 100
100
#ECEADE
oklch(93.5% 0.016 99)
-
Step 200
200
#DEDAC2
oklch(88.5% 0.032 99.3)
-
Step 300
300
#CAC296
oklch(81% 0.059 98.9)
-
Step 400
400
#B0A15A
oklch(70.6% 0.093 97.7)
-
Step 500
500 (this color)
#A18E27
oklch(64.5% 0.12 98.3)
-
Step 600
600
#857300
oklch(55.6% 0.115 98.3)
-
Step 700
700
#706100
oklch(49.2% 0.102 98.7)
-
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
#2D2605
oklch(26.9% 0.05 97.1)
#A18E27 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) | #9D8A14 | 0.015 |
| Deuteranopia (no green cones) | #A2912E | 0.009 |
| Tritanopia (no blue cones) | #AE837A | 0.110 |
| Achromatopsia (no color) | #8E8E8E | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18E27
#A18E27
oklch(64.5% 0.12 98.3)
- #7E85D6
#7E85D6
oklch(64.5% 0.121 278.7)
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 #A18E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mustard #A88905 ΔE 0.017
- Yellowy Brown #AE8B0C ΔE 0.021
- Dark Gold #B59410 ΔE 0.038
- Dark Goldenrod #B8860B ΔE 0.039
- Brown Yellow #B29705 ΔE 0.040
- Yellow Brown #B79400 ΔE 0.041
- Mustard Brown #AC7E04 ΔE 0.042
- Pea Soup #929901 ΔE 0.044
Use #A18E27 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.