#A4C558
Closest named color: Light Olive Green (#A4BE5C). oklch(77.6% 0.142 123.7), rgb(164, 197, 88).
Aa
Black text reads best on this color (10.70:1).
About this color
#A4C558 is a medium-light, vivid yellow. In OKLCH its lightness is 78%, its chroma 0.142 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Olive Green (#A4BE5C), ΔE 0.021 away. Black text reads best on it, at 10.70:1.
| Hue family | Yellows |
| Lightness | medium-light (78%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Light Olive Green (#A4BE5C) |
| Black text | 10.70:1 |
| White text | 1.96:1 |
Values
| HEX | #A4C558 |
| RGB | rgb(164, 197, 88) |
| HSL | hsl(78, 48%, 56%) |
| OKLCH | oklch(77.6% 0.142 123.7) |
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 #A4C558 | 1.96:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #A4C558 | 10.70:1 | AAA | Lc 66.2 | Content text, not long reading |
| #A4C558 text on white | 1.96:1 | Fails | Lc 37.7 | Non-text elements, placeholder text |
| #A4C558 text on black | 10.70:1 | AAA | Lc -64.7 | 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
#F3F8EA
oklch(97.2% 0.019 122.8)
-
Step 100
100
#E4EFD1
oklch(93.6% 0.041 123.6)
-
Step 200
200
#CEE2A9
oklch(88.4% 0.078 123.7)
-
Step 300
300 (this color)
#A4C558
oklch(77.6% 0.142 123.7)
-
Step 400
400
#8BB100
oklch(70.6% 0.175 123.7)
-
Step 500
500
#779800
oklch(63.1% 0.156 123.6)
-
Step 600
600
#638000
oklch(55.7% 0.138 124)
-
Step 700
700
#536B00
oklch(49% 0.121 123.6)
-
Step 800
800
#435800
oklch(42.7% 0.106 124.1)
-
Step 900
900
#384900
oklch(37.7% 0.093 123.4)
-
Step 950
950
#202B00
oklch(26.9% 0.066 123.3)
#A4C558 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) | #CFBA4D | 0.061 |
| Deuteranopia (no green cones) | #CBB95F | 0.063 |
| Tritanopia (no blue cones) | #ABBCAD | 0.117 |
| Achromatopsia (no color) | #B9B9B9 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4C558
#A4C558
oklch(77.6% 0.142 123.7)
- #C99FFF
#C99FFF
oklch(77.7% 0.14 303.4)
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 #A4C558, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Olive Green #A4BE5C ΔE 0.021
- Light Moss Green #A6C875 ΔE 0.030
- Light Olive #ACBF69 ΔE 0.030
- Pea #A4BF20 ΔE 0.037
- Tan Green #A9BE70 ΔE 0.038
- Yellow Green #9ACD32 ΔE 0.044
- Pale Olive Green #B1D27B ΔE 0.049
- Bright Olive #9CBB04 ΔE 0.050
Use #A4C558 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.