#66A878
Closest named color: Tea (#65AB7C). oklch(67.4% 0.098 151.7), rgb(102, 168, 120).
Aa
Black text reads best on this color (7.43:1).
About this color
#66A878 is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.098 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tea (#65AB7C), ΔE 0.009 away. Black text reads best on it, at 7.43:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Tea (#65AB7C) |
| Black text | 7.43:1 |
| White text | 2.82:1 |
Values
| HEX | #66A878 |
| RGB | rgb(102, 168, 120) |
| HSL | hsl(136, 27%, 53%) |
| OKLCH | oklch(67.4% 0.098 151.7) |
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 #66A878 | 2.82:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #66A878 | 7.43:1 | AAA | Lc 49.9 | Large or bold text, headings |
| #66A878 text on white | 2.82:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #66A878 text on black | 7.43:1 | AAA | Lc -47.7 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE4
oklch(93.5% 0.017 151.1)
-
Step 200
200
#C9E0CE
oklch(88.5% 0.035 152)
-
Step 300
300
#A4CDAD
oklch(81% 0.062 151.4)
-
Step 400
400 (this color)
#66A878
oklch(67.4% 0.098 151.7)
-
Step 500
500
#459F62
oklch(63.2% 0.126 151.7)
-
Step 600
600
#1C8948
oklch(55.6% 0.137 151.6)
-
Step 700
700
#08743A
oklch(49.1% 0.126 151.9)
-
Step 800
800
#105F30
oklch(42.8% 0.106 151.6)
-
Step 900
900
#184E2B
oklch(37.8% 0.082 151.8)
-
Step 950
950
#102E19
oklch(27.1% 0.053 151.2)
#66A878 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) | #A89E75 | 0.085 |
| Deuteranopia (no green cones) | #9E977B | 0.083 |
| Tritanopia (no blue cones) | #5AA69B | 0.052 |
| Achromatopsia (no color) | #9A9A9A | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A878
#66A878
oklch(67.4% 0.098 151.7)
- #BA80B2
#BA80B2
oklch(67.5% 0.098 331.5)
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 #66A878, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tea #65AB7C ΔE 0.009
- Dusty Green #76A973 ΔE 0.018
- Dull Green #74A662 ΔE 0.028
- Algae #54AC68 ΔE 0.033
- Greeny Grey #7EA07A ΔE 0.035
- Dark Seafoam Green #3EAF76 ΔE 0.037
- Faded Green #7BB274 ΔE 0.040
- Grey Green #86A17D ΔE 0.043
Use #66A878 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.