#A9C439
Closest named color: Pea (#A4BF20). oklch(77.5% 0.162 120), rgb(169, 196, 57).
Aa
Black text reads best on this color (10.64:1).
About this color
#A9C439 is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.162 and its hue 120°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.019 away. Black text reads best on it, at 10.64:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.64:1 |
| White text | 1.97:1 |
Values
| HEX | #A9C439 |
| RGB | rgb(169, 196, 57) |
| HSL | hsl(72, 55%, 50%) |
| OKLCH | oklch(77.5% 0.162 120) |
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 #A9C439 | 1.97:1 | Fails | Lc -42.3 | Non-text elements, placeholder text |
| Black text on #A9C439 | 10.64:1 | AAA | Lc 66.0 | Content text, not long reading |
| #A9C439 text on white | 1.97:1 | Fails | Lc 37.9 | Non-text elements, placeholder text |
| #A9C439 text on black | 10.64:1 | AAA | Lc -64.5 | Content text, not long reading |
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 300.
-
Step 50
50
#F3F8E8
oklch(97.1% 0.022 121)
-
Step 100
100
#E5EFCC
oklch(93.5% 0.047 120.3)
-
Step 200
200
#D1E29F
oklch(88.4% 0.089 119.8)
-
Step 300
300 (this color)
#A9C439
oklch(77.5% 0.162 120)
-
Step 400
400
#94AF00
oklch(70.8% 0.168 120.1)
-
Step 500
500
#7F9600
oklch(63.3% 0.15 120)
-
Step 600
600
#6A7E00
oklch(55.7% 0.132 120.1)
-
Step 700
700
#596900
oklch(49% 0.116 119.6)
-
Step 800
800
#485600
oklch(42.6% 0.101 120)
-
Step 900
900
#3C4800
oklch(37.7% 0.09 119.9)
-
Step 950
950
#232B00
oklch(27.2% 0.064 120)
#A9C439 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) | #D0B921 | 0.057 |
| Deuteranopia (no green cones) | #CDB945 | 0.060 |
| Tritanopia (no blue cones) | #B3BAA9 | 0.138 |
| Achromatopsia (no color) | #B8B8B8 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A9C439
#A9C439
oklch(77.5% 0.162 120)
- #C3A1FF
#C3A1FF
oklch(77.5% 0.135 299.9)
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 #A9C439, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.019
- Yellow Green #9ACD32 ΔE 0.031
- Bright Olive #9CBB04 ΔE 0.036
- Light Olive Green #A4BE5C ΔE 0.037
- Slime Green #99CC04 ΔE 0.039
- Mustard Green #A8B504 ΔE 0.040
- Olive Yellow #C2B709 ΔE 0.043
- Light Olive #ACBF69 ΔE 0.049
Use #A9C439 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.