#A18F00
Closest named color: Dark Mustard (#A88905). oklch(64.6% 0.135 100.4), rgb(161, 143, 0).
Aa
Black text reads best on this color (6.44:1).
About this color
#A18F00 is a medium-light, moderately saturated yellow. In OKLCH its lightness is 65%, its chroma 0.135 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Mustard (#A88905), ΔE 0.019 away. Black text reads best on it, at 6.44:1.
| Hue family | Yellows |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Dark Mustard (#A88905) |
| Black text | 6.44:1 |
| White text | 3.25:1 |
Values
| HEX | #A18F00 |
| RGB | rgb(161, 143, 0) |
| HSL | hsl(53, 100%, 32%) |
| OKLCH | oklch(64.6% 0.135 100.4) |
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 #A18F00 | 3.25:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #A18F00 | 6.44:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #A18F00 text on white | 3.25:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #A18F00 text on black | 6.44:1 | AA | Lc -42.0 | 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
#F7F6EF
oklch(97.2% 0.009 100)
-
Step 100
100
#ECEADC
oklch(93.5% 0.019 100.1)
-
Step 200
200
#DEDABF
oklch(88.4% 0.036 100.2)
-
Step 300
300
#CAC291
oklch(80.9% 0.066 99.9)
-
Step 400
400
#AFA250
oklch(70.6% 0.105 100.4)
-
Step 500
500 (this color)
#A18F00
oklch(64.6% 0.135 100.4)
-
Step 600
600
#837400
oklch(55.6% 0.116 100.3)
-
Step 700
700
#6E6100
oklch(49% 0.102 100.2)
-
Step 800
800
#5A5000
oklch(42.8% 0.089 101.1)
-
Step 900
900
#4B4200
oklch(37.7% 0.078 100.6)
-
Step 950
950
#2D2701
oklch(27.1% 0.055 100.2)
#A18F00 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) | #9E8B00 | 0.012 |
| Deuteranopia (no green cones) | #A39115 | 0.008 |
| Tritanopia (no blue cones) | #AF8379 | 0.124 |
| Achromatopsia (no color) | #8E8E8E | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A18F00
#A18F00
oklch(64.6% 0.135 100.4)
- #7F83DE
#7F83DE
oklch(64.7% 0.135 280)
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 #A18F00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Mustard #A88905 ΔE 0.019
- Yellowy Brown #AE8B0C ΔE 0.024
- Pea Soup #929901 ΔE 0.034
- Brown Yellow #B29705 ΔE 0.036
- Dark Gold #B59410 ΔE 0.037
- Yellow Brown #B79400 ΔE 0.039
- Dark Goldenrod #B8860B ΔE 0.044
- Mustard Brown #AC7E04 ΔE 0.048
Use #A18F00 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.