#66BC83
Closest named color: Soft Green (#6FC276). oklch(72.6% 0.118 153.4), rgb(102, 188, 131).
Aa
Black text reads best on this color (9.08:1).
About this color
#66BC83 is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.118 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.029 away. Black text reads best on it, at 9.08:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 9.08:1 |
| White text | 2.31:1 |
Values
| HEX | #66BC83 |
| RGB | rgb(102, 188, 131) |
| HSL | hsl(140, 39%, 57%) |
| OKLCH | oklch(72.6% 0.118 153.4) |
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 #66BC83 | 2.31:1 | Fails | Lc -50.3 | Large or bold text, headings |
| Black text on #66BC83 | 9.08:1 | AAA | Lc 58.6 | Large or bold text, headings |
| #66BC83 text on white | 2.31:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #66BC83 text on black | 9.08:1 | AAA | Lc -56.7 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E0EEE3
oklch(93.6% 0.021 152.2)
-
Step 200
200
#C5E2CD
oklch(88.6% 0.042 154)
-
Step 300
300
#9CCFAA
oklch(80.9% 0.074 153)
-
Step 400
400 (this color)
#66BC83
oklch(72.6% 0.118 153.4)
-
Step 500
500
#20A35C
oklch(63.1% 0.151 153.4)
-
Step 600
600
#008A49
oklch(55.5% 0.142 153.3)
-
Step 700
700
#00743D
oklch(49% 0.125 153.5)
-
Step 800
800
#005F31
oklch(42.6% 0.108 153.6)
-
Step 900
900
#005028
oklch(37.8% 0.097 153.4)
-
Step 950
950
#062F17
oklch(27% 0.063 153)
#66BC83 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) | #BCB080 | 0.104 |
| Deuteranopia (no green cones) | #AFA786 | 0.101 |
| Tritanopia (no blue cones) | #54BAAD | 0.061 |
| Achromatopsia (no color) | #AAAAAA | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BC83
#66BC83
oklch(72.6% 0.118 153.4)
- #D38AC6
#D38AC6
oklch(72.7% 0.118 333.3)
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 #66BC83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.029
- Faded Green #7BB274 ΔE 0.031
- Dark Mint #48C072 ΔE 0.038
- Sage Green #88B378 ΔE 0.038
- Greenblue #23C48B ΔE 0.039
- Boring Green #63B365 ΔE 0.040
- Lichen #8FB67B ΔE 0.042
- Green Blue #01C08D ΔE 0.043
Use #66BC83 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.