#AAAA00
Closest named color: Mustard Green (#A8B504). oklch(71.4% 0.156 109.8), rgb(170, 170, 0).
Aa
Black text reads best on this color (8.45:1).
About this color
#AAAA00 is a medium-light, vivid yellow. In OKLCH its lightness is 71%, its chroma 0.156 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.029 away. Black text reads best on it, at 8.45:1.
| Hue family | Yellows |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.156) |
| Temperature | warm |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 8.45:1 |
| White text | 2.48:1 |
Values
| HEX | #AAAA00 |
| RGB | rgb(170, 170, 0) |
| HSL | hsl(60, 100%, 33%) |
| OKLCH | oklch(71.4% 0.156 109.8) |
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 #AAAA00 | 2.48:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #AAAA00 | 8.45:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #AAAA00 text on white | 2.48:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #AAAA00 text on black | 8.45:1 | AAA | Lc -53.4 | 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
#DBDDB4
oklch(88.6% 0.054 109.8)
-
Step 300
300
#C4C67B
oklch(80.8% 0.097 109.7)
-
Step 400
400 (this color)
#AAAA00
oklch(71.4% 0.156 109.8)
-
Step 500
500
#909000
oklch(63.2% 0.138 109.8)
-
Step 600
600
#787800
oklch(55.4% 0.121 109.8)
-
Step 700
700
#656500
oklch(49.1% 0.107 109.8)
-
Step 800
800
#535300
oklch(42.8% 0.093 109.8)
-
Step 900
900
#454500
oklch(37.8% 0.082 109.8)
-
Step 950
950
#292900
oklch(27.2% 0.059 109.8)
#AAAA00 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) | #B9A200 | 0.030 |
| Deuteranopia (no green cones) | #BAA61D | 0.029 |
| Tritanopia (no blue cones) | #B79E90 | 0.141 |
| Achromatopsia (no color) | #A4A4A4 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAAA00
#AAAA00
oklch(71.4% 0.156 109.8)
- #A290FD
#A290FD
oklch(71.5% 0.156 289.4)
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 #AAAA00, closest first.
No curated palette has a color within ΔE 0.04 of #AAAA00.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.029
- Muddy Yellow #BFAC05 ΔE 0.033
- Pea Soup Green #94A617 ΔE 0.034
- Icky Green #8FAE22 ΔE 0.036
- Avocado #90B134 ΔE 0.036
- Pea Green #8EAB12 ΔE 0.038
- Avocado Green #87A922 ΔE 0.047
- Bright Olive #9CBB04 ΔE 0.048
Use #AAAA00 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.