#A5C538
Closest named color: Pea (#A4BF20). oklch(77.4% 0.166 121.6), rgb(165, 197, 56).
Aa
Black text reads best on this color (10.64:1).
About this color
#A5C538 is a medium-light, vivid yellow. In OKLCH its lightness is 77%, its chroma 0.166 and its hue 122°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Pea (#A4BF20), ΔE 0.018 away. Black text reads best on it, at 10.64:1.
| Hue family | Yellows |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Pea (#A4BF20) |
| Black text | 10.64:1 |
| White text | 1.97:1 |
Values
| HEX | #A5C538 |
| RGB | rgb(165, 197, 56) |
| HSL | hsl(74, 56%, 50%) |
| OKLCH | oklch(77.4% 0.166 121.6) |
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 #A5C538 | 1.97:1 | Fails | Lc -42.3 | Non-text elements, placeholder text |
| Black text on #A5C538 | 10.64:1 | AAA | Lc 66.0 | Content text, not long reading |
| #A5C538 text on white | 1.97:1 | Fails | Lc 37.9 | Non-text elements, placeholder text |
| #A5C538 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
#E4EFCC
oklch(93.5% 0.048 121.5)
-
Step 200
200
#CFE39F
oklch(88.5% 0.091 121.6)
-
Step 300
300 (this color)
#A5C538
oklch(77.4% 0.166 121.6)
-
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)
#A5C538 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) | #D1B91E | 0.063 |
| Deuteranopia (no green cones) | #CDB944 | 0.065 |
| Tritanopia (no blue cones) | #AEBBAA | 0.140 |
| Achromatopsia (no color) | #B8B8B8 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A5C538
#A5C538
oklch(77.4% 0.166 121.6)
- #C69FFF
#C69FFF
oklch(77.4% 0.139 302)
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 #A5C538, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pea #A4BF20 ΔE 0.018
- Yellow Green #9ACD32 ΔE 0.026
- Bright Olive #9CBB04 ΔE 0.034
- Slime Green #99CC04 ΔE 0.034
- Light Olive Green #A4BE5C ΔE 0.040
- Mustard Green #A8B504 ΔE 0.041
- Olive Yellow #C2B709 ΔE 0.048
- Light Olive #ACBF69 ΔE 0.053
Use #A5C538 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.