#66CA83
Closest named color: Soft Green (#6FC276). oklch(76% 0.139 151.3), rgb(102, 202, 131).
Aa
Black text reads best on this color (10.34:1).
About this color
#66CA83 is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.139 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.023 away. Black text reads best on it, at 10.34:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.34:1 |
| White text | 2.03:1 |
Values
| HEX | #66CA83 |
| RGB | rgb(102, 202, 131) |
| HSL | hsl(137, 49%, 60%) |
| OKLCH | oklch(76% 0.139 151.3) |
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 #66CA83 | 2.03:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #66CA83 | 10.34:1 | AAA | Lc 64.7 | Content text, not long reading |
| #66CA83 text on white | 2.03:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #66CA83 text on black | 10.34:1 | AAA | Lc -63.1 | 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
#EDF9EF
oklch(97% 0.018 150.6)
-
Step 100
100
#D7F2DD
oklch(93.6% 0.04 152.1)
-
Step 200
200
#B4E8C0
oklch(88.4% 0.077 151.6)
-
Step 300
300 (this color)
#66CA83
oklch(76% 0.139 151.3)
-
Step 400
400
#00C05F
oklch(70.7% 0.189 151.2)
-
Step 500
500
#00A551
oklch(63.2% 0.169 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
Step 700
700
#007537
oklch(49.2% 0.132 151.1)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#003013
oklch(27.1% 0.072 151.4)
#66CA83 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) | #CBBC7E | 0.119 |
| Deuteranopia (no green cones) | #BCB287 | 0.116 |
| Tritanopia (no blue cones) | #50C7B8 | 0.075 |
| Achromatopsia (no color) | #B6B6B6 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CA83
#66CA83
oklch(76% 0.139 151.3)
- #E48FD9
#E48FD9
oklch(76.1% 0.139 331.6)
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 #66CA83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.023
- Dark Mint #48C072 ΔE 0.043
- Greenblue #23C48B ΔE 0.044
- Seaweed #18D17B ΔE 0.045
- Emerald #06D6A0 ΔE 0.048
- Medium Aquamarine #66CDAA ΔE 0.051
- Algae Green #21C36F ΔE 0.054
- Dark Mint Green #20C073 ΔE 0.056
Use #66CA83 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.