#A4C040
Closest named color: Pea (#A4BF20). oklch(76.2% 0.155 120.8), rgb(164, 192, 64).
Aa
Black text reads best on this color (10.19:1).
About this color
#A4C040 is a medium-light, vivid yellow. In OKLCH its lightness is 76%, its chroma 0.155 and its hue 121°. 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 10.19:1.
| Hue family | Yellows |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.19:1 |
| White text | 2.06:1 |
Values
| HEX | #A4C040 |
| RGB | rgb(164, 192, 64) |
| HSL | hsl(73, 50%, 50%) |
| OKLCH | oklch(76.2% 0.155 120.8) |
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 #A4C040 | 2.06:1 | Fails | Lc -44.6 | Non-text elements, placeholder text |
| Black text on #A4C040 | 10.19:1 | AAA | Lc 63.9 | Content text, not long reading |
| #A4C040 text on white | 2.06:1 | Fails | Lc 40.1 | Non-text elements, placeholder text |
| #A4C040 text on black | 10.19:1 | AAA | Lc -62.2 | 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
#E5EFCE
oklch(93.6% 0.045 121)
-
Step 200
200
#D1E2A2
oklch(88.5% 0.086 120.3)
-
Step 300
300 (this color)
#A4C040
oklch(76.2% 0.155 120.8)
-
Step 400
400
#92AF00
oklch(70.7% 0.169 120.8)
-
Step 500
500
#7D9600
oklch(63.1% 0.151 120.8)
-
Step 600
600
#697E00
oklch(55.6% 0.133 120.6)
-
Step 700
700
#576A00
oklch(49.1% 0.118 121.1)
-
Step 800
800
#475700
oklch(42.8% 0.103 121.1)
-
Step 900
900
#3B4800
oklch(37.7% 0.09 120.7)
-
Step 950
950
#222B00
oklch(27.1% 0.065 121.1)
#A4C040 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) | #CCB52E | 0.058 |
| Deuteranopia (no green cones) | #C8B54A | 0.060 |
| Tritanopia (no blue cones) | #ADB6A6 | 0.131 |
| Achromatopsia (no color) | #B5B5B5 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4C040
#A4C040
oklch(76.2% 0.155 120.8)
- #C19BFF
#C19BFF
oklch(76.2% 0.144 300.5)
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 #A4C040, 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 0.027
- Bright Olive #9CBB04 ΔE 0.030
- Mustard Green #A8B504 ΔE 0.032
- Yellow Green #9ACD32 ΔE 0.040
- Light Olive #ACBF69 ΔE 0.042
- Olive Yellow #C2B709 ΔE 0.043
- Slime Green #99CC04 ΔE 0.048
Use #A4C040 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.