#A4B239
Closest named color: Mustard Green (#A8B504). oklch(73% 0.143 115.7), rgb(164, 178, 57).
Aa
Black text reads best on this color (9.00:1).
About this color
#A4B239 is a medium-light, vivid yellow. In OKLCH its lightness is 73%, its chroma 0.143 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.024 away. Black text reads best on it, at 9.00:1.
| Hue family | Yellows |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.00:1 |
| White text | 2.33:1 |
Values
| HEX | #A4B239 |
| RGB | rgb(164, 178, 57) |
| HSL | hsl(67, 51%, 46%) |
| OKLCH | oklch(73% 0.143 115.7) |
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 #A4B239 | 2.33:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #A4B239 | 9.00:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #A4B239 text on white | 2.33:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #A4B239 text on black | 9.00:1 | AAA | Lc -56.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F5F7EE
oklch(97.2% 0.012 116.8)
-
Step 100
100
#E9ECD9
oklch(93.6% 0.025 114.2)
-
Step 200
200
#D7DEB9
oklch(88.6% 0.05 116.1)
-
Step 300
300
#BEC885
oklch(80.9% 0.089 115.3)
-
Step 400
400 (this color)
#A4B239
oklch(73% 0.143 115.7)
-
Step 500
500
#869300
oklch(63.1% 0.144 115.9)
-
Step 600
600
#717B00
oklch(55.5% 0.126 115.3)
-
Step 700
700
#5E6800
oklch(49.2% 0.113 116.2)
-
Step 800
800
#4D5500
oklch(42.8% 0.098 115.9)
-
Step 900
900
#404700
oklch(37.8% 0.086 116)
-
Step 950
950
#252A00
oklch(27.1% 0.062 116.5)
#A4B239 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) | #BEA927 | 0.040 |
| Deuteranopia (no green cones) | #BDAB42 | 0.042 |
| Tritanopia (no blue cones) | #AEA89A | 0.125 |
| Achromatopsia (no color) | #AAAAAA | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4B239
#A4B239
oklch(73% 0.143 115.7)
- #B093F7
#B093F7
oklch(72.9% 0.144 296)
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 #A4B239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.024
- Avocado #90B134 ΔE 0.028
- Icky Green #8FAE22 ΔE 0.036
- Light Olive Green #A4BE5C ΔE 0.037
- Bright Olive #9CBB04 ΔE 0.039
- Muddy Yellow #BFAC05 ΔE 0.039
- Pea #A4BF20 ΔE 0.041
- Pea Green #8EAB12 ΔE 0.043
Use #A4B239 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.