#66CB8A
Closest named color: Soft Green (#6FC276). oklch(76.4% 0.134 153.6), rgb(102, 203, 138).
Aa
Black text reads best on this color (10.47:1).
About this color
#66CB8A is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.134 and its hue 154°. 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 10.47:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.47:1 |
| White text | 2.00:1 |
Values
| HEX | #66CB8A |
| RGB | rgb(102, 203, 138) |
| HSL | hsl(141, 49%, 60%) |
| OKLCH | oklch(76.4% 0.134 153.6) |
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 #66CB8A | 2.00:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #66CB8A | 10.47:1 | AAA | Lc 65.3 | Content text, not long reading |
| #66CB8A text on white | 2.00:1 | Fails | Lc 38.6 | Non-text elements, placeholder text |
| #66CB8A text on black | 10.47:1 | AAA | Lc -63.7 | 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
#EDF9F0
oklch(97.1% 0.017 153.6)
-
Step 100
100
#D7F2DE
oklch(93.6% 0.039 153.5)
-
Step 200
200
#B4E8C3
oklch(88.5% 0.074 153.7)
-
Step 300
300 (this color)
#66CB8A
oklch(76.4% 0.134 153.6)
-
Step 400
400
#00BF69
oklch(70.6% 0.179 153.7)
-
Step 500
500
#00A459
oklch(63% 0.16 153.6)
-
Step 600
600
#008A4A
oklch(55.6% 0.141 153.6)
-
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
#003016
oklch(27.1% 0.069 153.7)
#66CB8A 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) | #CBBD86 | 0.118 |
| Deuteranopia (no green cones) | #BCB38E | 0.115 |
| Tritanopia (no blue cones) | #4EC9BA | 0.068 |
| Achromatopsia (no color) | #B7B7B7 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CB8A
#66CB8A
oklch(76.4% 0.134 153.6)
- #E591D6
#E591D6
oklch(76.4% 0.133 333.5)
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 #66CB8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.029
- Medium Aquamarine #66CDAA ΔE 0.042
- Emerald #06D6A0 ΔE 0.044
- Greenblue #23C48B ΔE 0.045
- Dark Mint #48C072 ΔE 0.048
- Seaweed #18D17B ΔE 0.049
- Dark Sea Green #8FBC8F ΔE 0.058
- Green Blue #01C08D ΔE 0.058
Use #66CB8A 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.