#ACAA1C
Closest named color: Muddy Yellow (#BFAC05). oklch(71.7% 0.149 108.7), rgb(172, 170, 28).
Aa
Black text reads best on this color (8.52:1).
About this color
#ACAA1C is a medium-light, vivid yellow. In OKLCH its lightness is 72%, its chroma 0.149 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 8.52:1.
| Hue family | Yellows |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Muddy Yellow (#BFAC05) |
| Black text | 8.52:1 |
| White text | 2.46:1 |
Values
| HEX | #ACAA1C |
| RGB | rgb(172, 170, 28) |
| HSL | hsl(59, 72%, 39%) |
| OKLCH | oklch(71.7% 0.149 108.7) |
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 #ACAA1C | 2.46:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #ACAA1C | 8.52:1 | AAA | Lc 55.7 | Large or bold text, headings |
| #ACAA1C text on white | 2.46:1 | Fails | Lc 48.3 | Large or bold text, headings |
| #ACAA1C text on black | 8.52:1 | AAA | Lc -53.7 | 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
#EBECD7
oklch(93.7% 0.028 109.1)
-
Step 200
200
#DBDCB6
oklch(88.4% 0.05 108.6)
-
Step 300
300
#C5C67E
oklch(80.9% 0.093 109)
-
Step 400
400 (this color)
#ACAA1C
oklch(71.7% 0.149 108.7)
-
Step 500
500
#918F00
oklch(63.1% 0.137 108.8)
-
Step 600
600
#7A7800
oklch(55.6% 0.12 108.6)
-
Step 700
700
#666500
oklch(49.1% 0.107 109.1)
-
Step 800
800
#545200
oklch(42.7% 0.092 108.1)
-
Step 900
900
#464400
oklch(37.6% 0.081 107.8)
-
Step 950
950
#292800
oklch(26.9% 0.058 108.3)
#ACAA1C 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) | #B9A300 | 0.024 |
| Deuteranopia (no green cones) | #BBA72A | 0.026 |
| Tritanopia (no blue cones) | #B99E91 | 0.135 |
| Achromatopsia (no color) | #A5A5A5 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ACAA1C
#ACAA1C
oklch(71.7% 0.149 108.7)
- #A192FA
#A192FA
oklch(71.6% 0.149 288.7)
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 #ACAA1C, closest first.
No curated palette has a color within ΔE 0.04 of #ACAA1C.
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 0.032
- Pea Soup Green #94A617 ΔE 0.037
- Avocado #90B134 ΔE 0.039
- Icky Green #8FAE22 ΔE 0.040
- Pea Green #8EAB12 ΔE 0.043
- Ocher #BF9B0C ΔE 0.046
- Brown Yellow #B29705 ΔE 0.049
Use #ACAA1C 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.