#66B58A
Closest named color: Tea (#65AB7C). oklch(71% 0.101 158.6), rgb(102, 181, 138).
Aa
Black text reads best on this color (8.54:1).
About this color
#66B58A is a medium-light, moderately saturated green. In OKLCH its lightness is 71%, its chroma 0.101 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tea (#65AB7C), ΔE 0.030 away. Black text reads best on it, at 8.54:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Tea (#65AB7C) |
| Black text | 8.54:1 |
| White text | 2.45:1 |
Values
| HEX | #66B58A |
| RGB | rgb(102, 181, 138) |
| HSL | hsl(147, 35%, 55%) |
| OKLCH | oklch(71% 0.101 158.6) |
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 #66B58A | 2.45:1 | Fails | Lc -53.2 | Large or bold text, headings |
| Black text on #66B58A | 8.54:1 | AAA | Lc 55.8 | Large or bold text, headings |
| #66B58A text on white | 2.45:1 | Fails | Lc 48.2 | Large or bold text, headings |
| #66B58A text on black | 8.54:1 | AAA | Lc -53.8 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E0EEE5
oklch(93.6% 0.019 157.9)
-
Step 200
200
#C7E1D1
oklch(88.6% 0.035 158.6)
-
Step 300
300
#9ECEB2
oklch(81% 0.064 159)
-
Step 400
400 (this color)
#66B58A
oklch(71% 0.101 158.6)
-
Step 500
500
#2EA16C
oklch(63.2% 0.13 158.7)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#054F30
oklch(37.8% 0.085 158.3)
-
Step 950
950
#092E1C
oklch(26.9% 0.054 158.1)
#66B58A 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) | #B4AA88 | 0.096 |
| Deuteranopia (no green cones) | #A7A28D | 0.091 |
| Tritanopia (no blue cones) | #53B4A9 | 0.046 |
| Achromatopsia (no color) | #A5A5A5 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66B58A
#66B58A
oklch(71% 0.101 158.6)
- #CB89B7
#CB89B7
oklch(71.1% 0.1 338.5)
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 #66B58A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tea #65AB7C ΔE 0.030
- Faded Green #7BB274 ΔE 0.031
- Greeny Blue #42B395 ΔE 0.031
- Dusty Green #76A973 ΔE 0.037
- Sage Green #88B378 ΔE 0.038
- Sage #87AE73 ΔE 0.040
- Lichen #8FB67B ΔE 0.046
- Dark Seafoam Green #3EAF76 ΔE 0.047
Use #66B58A 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.