#A3C42C
Closest named color: Pea (#A4BF20). oklch(77% 0.172 121.7), rgb(163, 196, 44).
Aa
Black text reads best on this color (10.48:1).
About this color
#A3C42C is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.172 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.013 away. Black text reads best on it, at 10.48:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.48:1 |
| White text | 2.00:1 |
Values
| HEX | #A3C42C |
| RGB | rgb(163, 196, 44) |
| HSL | hsl(73, 63%, 47%) |
| OKLCH | oklch(77% 0.172 121.7) |
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 #A3C42C | 2.00:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #A3C42C | 10.48:1 | AAA | Lc 65.3 | Content text, not long reading |
| #A3C42C text on white | 2.00:1 | Fails | Lc 38.6 | Non-text elements, placeholder text |
| #A3C42C text on black | 10.48:1 | AAA | Lc -63.8 | 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
#F3F8E7
oklch(97.1% 0.023 120.2)
-
Step 100
100
#E4F0CB
oklch(93.7% 0.05 122)
-
Step 200
200
#CFE49C
oklch(88.6% 0.096 121.6)
-
Step 300
300 (this color)
#A3C42C
oklch(77% 0.172 121.7)
-
Step 400
400
#90B000
oklch(70.8% 0.171 121.8)
-
Step 500
500
#7B9700
oklch(63.2% 0.153 121.9)
-
Step 600
600
#677E00
oklch(55.5% 0.134 121.5)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4800
oklch(37.6% 0.091 121.4)
-
Step 950
950
#212B00
oklch(27% 0.066 122.2)
#A3C42C 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) | #D0B800 | 0.065 |
| Deuteranopia (no green cones) | #CCB73B | 0.068 |
| Tritanopia (no blue cones) | #ACBAA8 | 0.144 |
| Achromatopsia (no color) | #B7B7B7 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3C42C
#A3C42C
oklch(77% 0.172 121.7)
- #C59DFF
#C59DFF
oklch(77% 0.142 302)
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 #A3C42C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.013
- Yellow Green #9ACD32 ΔE 0.025
- Bright Olive #9CBB04 ΔE 0.028
- Slime Green #99CC04 ΔE 0.030
- Mustard Green #A8B504 ΔE 0.038
- Light Olive Green #A4BE5C ΔE 0.045
- Olive Yellow #C2B709 ΔE 0.049
- Dark Lime Green #7EBD01 ΔE 0.054
Use #A3C42C 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.