#66CD7B
Closest named color: Soft Green (#6FC276). oklch(76.6% 0.151 148.5), rgb(102, 205, 123).
Aa
Black text reads best on this color (10.58:1).
About this color
#66CD7B is a medium-light, vivid green. In OKLCH its lightness is 77%, its chroma 0.151 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.030 away. Black text reads best on it, at 10.58:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.58:1 |
| White text | 1.98:1 |
Values
| HEX | #66CD7B |
| RGB | rgb(102, 205, 123) |
| HSL | hsl(132, 51%, 60%) |
| OKLCH | oklch(76.6% 0.151 148.5) |
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 #66CD7B | 1.98:1 | Fails | Lc -42.5 | Non-text elements, placeholder text |
| Black text on #66CD7B | 10.58:1 | AAA | Lc 65.8 | Content text, not long reading |
| #66CD7B text on white | 1.98:1 | Fails | Lc 38.1 | Non-text elements, placeholder text |
| #66CD7B text on black | 10.58:1 | AAA | Lc -64.3 | 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
#EDFAEE
oklch(97.2% 0.021 147.6)
-
Step 100
100
#D7F3DA
oklch(93.7% 0.044 148.3)
-
Step 200
200
#B3E9BB
oklch(88.5% 0.084 148.9)
-
Step 300
300 (this color)
#66CD7B
oklch(76.6% 0.151 148.5)
-
Step 400
400
#00C151
oklch(70.8% 0.202 148.5)
-
Step 500
500
#00A544
oklch(63% 0.18 148.5)
-
Step 600
600
#008B38
oklch(55.6% 0.159 148.5)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300E
oklch(27% 0.077 148.3)
#66CD7B 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) | #CFBE75 | 0.124 |
| Deuteranopia (no green cones) | #C0B480 | 0.121 |
| Tritanopia (no blue cones) | #52C9B9 | 0.087 |
| Achromatopsia (no color) | #B8B8B8 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CD7B
#66CD7B
oklch(76.6% 0.151 148.5)
- #E78EE3
#E78EE3
oklch(76.7% 0.152 328.5)
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 #66CD7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.030
- Seaweed #18D17B ΔE 0.038
- Dark Mint #48C072 ΔE 0.046
- Emerald #06D6A0 ΔE 0.051
- Greenblue #23C48B ΔE 0.053
- Algae Green #21C36F ΔE 0.054
- Aqua Green #12E193 ΔE 0.057
- Dark Mint Green #20C073 ΔE 0.059
Use #66CD7B 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.