#AAB640
Closest named color: Mustard Green (#A8B504). oklch(74.4% 0.141 114.8), rgb(170, 182, 64).
Aa
Black text reads best on this color (9.47:1).
About this color
#AAB640 is a medium-light, vivid yellow. In OKLCH its lightness is 74%, its chroma 0.141 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mustard Green (#A8B504), ΔE 0.026 away. Black text reads best on it, at 9.47:1.
| Hue family | Yellows |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Mustard Green (#A8B504) |
| Black text | 9.47:1 |
| White text | 2.21:1 |
Values
| HEX | #AAB640 |
| RGB | rgb(170, 182, 64) |
| HSL | hsl(66, 48%, 48%) |
| OKLCH | oklch(74.4% 0.141 114.8) |
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 #AAB640 | 2.21:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #AAB640 | 9.47:1 | AAA | Lc 60.4 | Content text, not long reading |
| #AAB640 text on white | 2.21:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #AAB640 text on black | 9.47:1 | AAA | Lc -58.6 | 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
#F5F6EE
oklch(97% 0.011 112.4)
-
Step 100
100
#E9ECD9
oklch(93.6% 0.025 114.2)
-
Step 200
200
#D8DDB9
oklch(88.4% 0.048 113.8)
-
Step 300
300
#BFC885
oklch(81% 0.089 114.6)
-
Step 400
400 (this color)
#AAB640
oklch(74.4% 0.141 114.8)
-
Step 500
500
#889200
oklch(63% 0.142 114.5)
-
Step 600
600
#727B00
oklch(55.6% 0.126 114.8)
-
Step 700
700
#5F6700
oklch(49% 0.111 115)
-
Step 800
800
#4E5400
oklch(42.6% 0.096 114.4)
-
Step 900
900
#414600
oklch(37.7% 0.085 114.3)
-
Step 950
950
#262A00
oklch(27.2% 0.062 115.2)
#AAB640 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) | #C3AD30 | 0.039 |
| Deuteranopia (no green cones) | #C2AF48 | 0.041 |
| Tritanopia (no blue cones) | #B5AC9E | 0.124 |
| Achromatopsia (no color) | #AEAEAE | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AAB640
#AAB640
oklch(74.4% 0.141 114.8)
- #B399FB
#B399FB
oklch(74.5% 0.14 295)
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 #AAB640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mustard Green #A8B504 ΔE 0.026
- Light Olive Green #A4BE5C ΔE 0.026
- Pea #A4BF20 ΔE 0.036
- Muddy Yellow #BFAC05 ΔE 0.037
- Olive Yellow #C2B709 ΔE 0.038
- Light Olive #ACBF69 ΔE 0.039
- Bright Olive #9CBB04 ΔE 0.040
- Avocado #90B134 ΔE 0.041
Use #AAB640 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.