#ACB63A
Closest named color: Mustard Green (#A8B504). oklch(74.5% 0.145 113.9), rgb(172, 182, 58).
Aa
Black text reads best on this color (9.50:1).
About this color
#ACB63A is a medium-light, vivid yellow. In OKLCH its lightness is 75%, its chroma 0.145 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.023 away. Black text reads best on it, at 9.50:1.
| Hue family | Yellows |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.50:1 |
| White text | 2.20:1 |
Values
| HEX | #ACB63A |
| RGB | rgb(172, 182, 58) |
| HSL | hsl(65, 52%, 47%) |
| OKLCH | oklch(74.5% 0.145 113.9) |
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 #ACB63A | 2.20:1 | Fails | Lc -48.1 | Large or bold text, headings |
| Black text on #ACB63A | 9.50:1 | AAA | Lc 60.6 | Content text, not long reading |
| #ACB63A text on white | 2.20:1 | Fails | Lc 43.4 | Non-text elements, placeholder text |
| #ACB63A text on black | 9.50:1 | AAA | Lc -58.8 | 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
#F5F6ED
oklch(97% 0.012 111.8)
-
Step 100
100
#E9ECD9
oklch(93.6% 0.025 114.2)
-
Step 200
200
#D8DDB8
oklch(88.4% 0.049 113.7)
-
Step 300
300
#C0C883
oklch(81% 0.091 113.8)
-
Step 400
400 (this color)
#ACB63A
oklch(74.5% 0.145 113.9)
-
Step 500
500
#899200
oklch(63.1% 0.142 114.1)
-
Step 600
600
#737A00
oklch(55.5% 0.124 113.7)
-
Step 700
700
#616700
oklch(49.2% 0.11 113.7)
-
Step 800
800
#4F5400
oklch(42.7% 0.096 113.7)
-
Step 900
900
#414600
oklch(37.7% 0.085 114.3)
-
Step 950
950
#262900
oklch(26.9% 0.06 113.9)
#ACB63A 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) | #C3AD27 | 0.037 |
| Deuteranopia (no green cones) | #C3B043 | 0.039 |
| Tritanopia (no blue cones) | #B7AB9D | 0.128 |
| Achromatopsia (no color) | #AEAEAE | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ACB63A
#ACB63A
oklch(74.5% 0.145 113.9)
- #B299FE
#B299FE
oklch(74.5% 0.144 294)
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 #ACB63A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.023
- Light Olive Green #A4BE5C ΔE 0.029
- Pea #A4BF20 ΔE 0.034
- Olive Yellow #C2B709 ΔE 0.034
- Muddy Yellow #BFAC05 ΔE 0.034
- Bright Olive #9CBB04 ΔE 0.038
- Light Olive #ACBF69 ΔE 0.042
- Avocado #90B134 ΔE 0.042
Use #ACB63A 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.