#66E077
Closest named color: Weird Green (#3AE57F). oklch(81.2% 0.181 146.4), rgb(102, 224, 119).
Aa
Black text reads best on this color (12.49:1).
About this color
#66E077 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.181 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Weird Green (#3AE57F), ΔE 0.024 away. Black text reads best on it, at 12.49:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Weird Green (#3AE57F) |
| Black text | 12.49:1 |
| White text | 1.68:1 |
Values
| HEX | #66E077 |
| RGB | rgb(102, 224, 119) |
| HSL | hsl(128, 66%, 64%) |
| OKLCH | oklch(81.2% 0.181 146.4) |
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 #66E077 | 1.68:1 | Fails | Lc -33.2 | Non-text elements, placeholder text |
| Black text on #66E077 | 12.49:1 | AAA | Lc 74.4 | Content text, not long reading |
| #66E077 text on white | 1.68:1 | Fails | Lc 29.5 | Dividers and decoration only |
| #66E077 text on black | 12.49:1 | AAA | Lc -73.4 | 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
#ECFAEC
oklch(97.1% 0.024 145.4)
-
Step 100
100
#D4F4D6
oklch(93.6% 0.052 146.9)
-
Step 200
200
#AEECB2
oklch(88.6% 0.101 146.3)
-
Step 300
300 (this color)
#66E077
oklch(81.2% 0.181 146.4)
-
Step 400
400
#00C143
oklch(70.6% 0.213 146.5)
-
Step 500
500
#00A638
oklch(63.1% 0.19 146.5)
-
Step 600
600
#008C2E
oklch(55.7% 0.168 146.5)
-
Step 700
700
#007525
oklch(49% 0.148 146.5)
-
Step 800
800
#00601D
oklch(42.6% 0.128 146.5)
-
Step 900
900
#005017
oklch(37.6% 0.113 146.6)
-
Step 950
950
#00300A
oklch(26.9% 0.081 146.4)
#66E077 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) | #E3CE6F | 0.142 |
| Deuteranopia (no green cones) | #D3C37E | 0.141 |
| Tritanopia (no blue cones) | #4EDBC7 | 0.108 |
| Achromatopsia (no color) | #C8C8C8 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E077
#66E077
oklch(81.2% 0.181 146.4)
- #FD94FF
#FD94FF
oklch(81.2% 0.182 326.4)
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 #66E077, closest first.
No curated palette has a color within ΔE 0.04 of #66E077.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Weird Green #3AE57F ΔE 0.024
- Fresh Green #69D84F ΔE 0.039
- Aqua Green #12E193 ΔE 0.041
- Turquoise Green #04F489 ΔE 0.055
- Kiwi Green #8EE53F ΔE 0.058
- Seaweed #18D17B ΔE 0.061
- Light Green #90EE90 ΔE 0.062
- Toxic Green #61DE2A ΔE 0.062
Use #66E077 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.