#66D48D
Closest named color: Emerald (#06D6A0). oklch(78.7% 0.144 153.3), rgb(102, 212, 141).
Aa
Black text reads best on this color (11.36:1).
About this color
#66D48D is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.144 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.039 away. Black text reads best on it, at 11.36:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 11.36:1 |
| White text | 1.84:1 |
Values
| HEX | #66D48D |
| RGB | rgb(102, 212, 141) |
| HSL | hsl(141, 56%, 62%) |
| OKLCH | oklch(78.7% 0.144 153.3) |
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 #66D48D | 1.84:1 | Fails | Lc -38.6 | Non-text elements, placeholder text |
| Black text on #66D48D | 11.36:1 | AAA | Lc 69.4 | Content text, not long reading |
| #66D48D text on white | 1.84:1 | Fails | Lc 34.5 | Non-text elements, placeholder text |
| #66D48D text on black | 11.36:1 | AAA | Lc -68.1 | 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
#ECF9EF
oklch(97% 0.019 152.8)
-
Step 100
100
#D6F3DD
oklch(93.7% 0.042 152.8)
-
Step 200
200
#B1E9C1
oklch(88.5% 0.079 153.5)
-
Step 300
300 (this color)
#66D48D
oklch(78.7% 0.144 153.3)
-
Step 400
400
#00C068
oklch(70.8% 0.181 153.3)
-
Step 500
500
#00A458
oklch(63% 0.161 153.3)
-
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
#003015
oklch(27.1% 0.07 152.9)
#66D48D 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) | #D4C588 | 0.126 |
| Deuteranopia (no green cones) | #C4BA91 | 0.123 |
| Tritanopia (no blue cones) | #4AD2C2 | 0.074 |
| Achromatopsia (no color) | #BFBFBF | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66D48D
#66D48D
oklch(78.7% 0.144 153.3)
- #F095E1
#F095E1
oklch(78.7% 0.144 333)
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 #66D48D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.039
- Aqua Green #12E193 ΔE 0.044
- Seaweed #18D17B ΔE 0.049
- Soft Green #6FC276 ΔE 0.049
- Medium Aquamarine #66CDAA ΔE 0.049
- Weird Green #3AE57F ΔE 0.060
- Seafoam Blue #78D1B6 ΔE 0.063
- Greenblue #23C48B ΔE 0.063
Use #66D48D 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.