#ACAB28
Closest named color: Muddy Yellow (#BFAC05). oklch(72% 0.144 109.1), rgb(172, 171, 40).
Aa
Black text reads best on this color (8.60:1).
About this color
#ACAB28 is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.144 and its hue 109°. Its hue sits on the warm side of the wheel. The nearest named color is Muddy Yellow (#BFAC05), ΔE 0.029 away. Black text reads best on it, at 8.60:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.144) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.60:1 |
| White text | 2.43:1 |
Values
| HEX | #ACAB28 |
| RGB | rgb(172, 171, 40) |
| HSL | hsl(60, 62%, 42%) |
| OKLCH | oklch(72% 0.144 109.1) |
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 #ACAB28 | 2.43:1 | Fails | Lc -52.9 | Large or bold text, headings |
| Black text on #ACAB28 | 8.60:1 | AAA | Lc 56.1 | Large or bold text, headings |
| #ACAB28 text on white | 2.43:1 | Fails | Lc 47.9 | Large or bold text, headings |
| #ACAB28 text on black | 8.60:1 | AAA | Lc -54.1 | 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
#F6F6ED
oklch(97.1% 0.012 106.6)
-
Step 100
100
#EBECD8
oklch(93.7% 0.026 109.2)
-
Step 200
200
#DBDCB7
oklch(88.4% 0.049 108.6)
-
Step 300
300
#C5C681
oklch(81% 0.09 109)
-
Step 400
400 (this color)
#ACAB28
oklch(72% 0.144 109.1)
-
Step 500
500
#918F00
oklch(63.1% 0.137 108.8)
-
Step 600
600
#797800
oklch(55.5% 0.121 109.2)
-
Step 700
700
#666500
oklch(49.1% 0.107 109.1)
-
Step 800
800
#535200
oklch(42.6% 0.092 108.9)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#292800
oklch(26.9% 0.058 108.3)
#ACAB28 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) | #B9A404 | 0.024 |
| Deuteranopia (no green cones) | #BBA833 | 0.026 |
| Tritanopia (no blue cones) | #B9A093 | 0.130 |
| Achromatopsia (no color) | #A6A6A6 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ACAB28
#ACAB28
oklch(72% 0.144 109.1)
- #A394F8
#A394F8
oklch(72.1% 0.143 289.2)
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 #ACAB28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Yellow #BFAC05 ΔE 0.029
- Mustard Green #A8B504 ΔE 0.033
- Avocado #90B134 ΔE 0.038
- Pea Soup Green #94A617 ΔE 0.040
- Icky Green #8FAE22 ΔE 0.041
- Pea Green #8EAB12 ΔE 0.045
- Ocher #BF9B0C ΔE 0.046
- Olive Yellow #C2B709 ΔE 0.049
Use #ACAB28 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.