#81B522
Closest named color: Dark Lime (#84B701). oklch(71.1% 0.175 128.2), rgb(129, 181, 34).
Aa
Black text reads best on this color (8.56:1).
About this color
#81B522 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.175 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Lime (#84B701), ΔE 0.012 away. Black text reads best on it, at 8.56:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Dark Lime (#84B701) |
| Black text | 8.56:1 |
| White text | 2.45:1 |
Values
| HEX | #81B522 |
| RGB | rgb(129, 181, 34) |
| HSL | hsl(81, 68%, 42%) |
| OKLCH | oklch(71.1% 0.175 128.2) |
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 #81B522 | 2.45:1 | Fails | Lc -53.0 | Large or bold text, headings |
| Black text on #81B522 | 8.56:1 | AAA | Lc 56.0 | Large or bold text, headings |
| #81B522 text on white | 2.45:1 | Fails | Lc 48.0 | Large or bold text, headings |
| #81B522 text on black | 8.56:1 | AAA | Lc -54.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#F2F7ED
oklch(97% 0.014 128.6)
-
Step 100
100
#E4EED8
oklch(93.6% 0.031 127)
-
Step 200
200
#CDE1B7
oklch(88.4% 0.06 128.3)
-
Step 300
300
#ACCE81
oklch(80.8% 0.109 128)
-
Step 400
400 (this color)
#81B522
oklch(71.1% 0.175 128.2)
-
Step 500
500
#6B9B00
oklch(63.1% 0.166 128.3)
-
Step 600
600
#5A8200
oklch(55.6% 0.145 128)
-
Step 700
700
#4B6D00
oklch(49% 0.128 127.9)
-
Step 800
800
#3C5A00
oklch(42.8% 0.113 128.5)
-
Step 900
900
#324B00
oklch(37.8% 0.099 128.2)
-
Step 950
950
#1C2C00
oklch(26.9% 0.07 127.9)
#81B522 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) | #BEA800 | 0.085 |
| Deuteranopia (no green cones) | #B7A433 | 0.087 |
| Tritanopia (no blue cones) | #86AD9A | 0.137 |
| Achromatopsia (no color) | #A5A5A5 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81B522
#81B522
oklch(71.1% 0.175 128.2)
- #C07FF4
#C07FF4
oklch(71% 0.175 308.2)
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 #81B522, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Lime #84B701 ΔE 0.012
- Icky Green #8FAE22 ΔE 0.024
- Dark Lime Green #7EBD01 ΔE 0.026
- Avocado #90B134 ΔE 0.026
- Pea Green #8EAB12 ΔE 0.029
- Turtle Green #75B84F ΔE 0.030
- Avocado Green #87A922 ΔE 0.033
- Bright Olive #9CBB04 ΔE 0.039
Use #81B522 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.