#A1C040
Closest named color: Pea (#A4BF20). oklch(76% 0.156 121.9), rgb(161, 192, 64).
Aa
Black text reads best on this color (10.12:1).
About this color
#A1C040 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.156 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.017 away. Black text reads best on it, at 10.12:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.12:1 |
| White text | 2.07:1 |
Values
| HEX | #A1C040 |
| RGB | rgb(161, 192, 64) |
| HSL | hsl(75, 50%, 50%) |
| OKLCH | oklch(76% 0.156 121.9) |
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 #A1C040 | 2.07:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #A1C040 | 10.12:1 | AAA | Lc 63.6 | Content text, not long reading |
| #A1C040 text on white | 2.07:1 | Fails | Lc 40.4 | Non-text elements, placeholder text |
| #A1C040 text on black | 10.12:1 | AAA | Lc -61.9 | 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
#F3F8E9
oklch(97.1% 0.02 121.8)
-
Step 100
100
#E4EFCE
oklch(93.5% 0.045 122.3)
-
Step 200
200
#CFE3A3
oklch(88.5% 0.087 122.3)
-
Step 300
300 (this color)
#A1C040
oklch(76% 0.156 121.9)
-
Step 400
400
#8FB000
oklch(70.7% 0.172 122.1)
-
Step 500
500
#7B9700
oklch(63.2% 0.153 121.9)
-
Step 600
600
#677F00
oklch(55.7% 0.135 121.9)
-
Step 700
700
#566A00
oklch(49% 0.118 121.7)
-
Step 800
800
#465700
oklch(42.7% 0.103 121.8)
-
Step 900
900
#3A4900
oklch(37.9% 0.092 122)
-
Step 950
950
#212B00
oklch(27% 0.066 122.2)
#A1C040 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) | #CBB52E | 0.060 |
| Deuteranopia (no green cones) | #C7B44A | 0.063 |
| Tritanopia (no blue cones) | #A9B6A6 | 0.131 |
| Achromatopsia (no color) | #B4B4B4 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1C040
#A1C040
oklch(76% 0.156 121.9)
- #C399FF
#C399FF
oklch(76.1% 0.148 302)
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 #A1C040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.017
- Light Olive Green #A4BE5C ΔE 0.028
- Bright Olive #9CBB04 ΔE 0.028
- Mustard Green #A8B504 ΔE 0.032
- Yellow Green #9ACD32 ΔE 0.040
- Light Olive #ACBF69 ΔE 0.044
- Olive Yellow #C2B709 ΔE 0.047
- Slime Green #99CC04 ΔE 0.047
Use #A1C040 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.