#66C089
Closest named color: Soft Green (#6FC276). oklch(73.7% 0.119 155.3), rgb(102, 192, 137).
Aa
Black text reads best on this color (9.46:1).
About this color
#66C089 is a medium-light, moderately saturated green. In OKLCH its lightness is 74%, its chroma 0.119 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.027 away. Black text reads best on it, at 9.46:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 9.46:1 |
| White text | 2.21:1 |
Values
| HEX | #66C089 |
| RGB | rgb(102, 192, 137) |
| HSL | hsl(143, 42%, 58%) |
| OKLCH | oklch(73.7% 0.119 155.3) |
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 #66C089 | 2.21:1 | Fails | Lc -48.3 | Large or bold text, headings |
| Black text on #66C089 | 9.46:1 | AAA | Lc 60.5 | Content text, not long reading |
| #66C089 text on white | 2.21:1 | Fails | Lc 43.5 | Non-text elements, placeholder text |
| #66C089 text on black | 9.46:1 | AAA | Lc -58.7 | 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
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DFEEE4
oklch(93.5% 0.021 156.8)
-
Step 200
200
#C5E2CE
oklch(88.6% 0.041 155.4)
-
Step 300
300
#9ACFAC
oklch(80.8% 0.074 155.5)
-
Step 400
400 (this color)
#66C089
oklch(73.7% 0.119 155.3)
-
Step 500
500
#10A35F
oklch(63% 0.152 155.2)
-
Step 600
600
#008A4E
oklch(55.6% 0.137 155)
-
Step 700
700
#007441
oklch(49.1% 0.121 155.2)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2B
oklch(37.6% 0.092 155.5)
-
Step 950
950
#032F18
oklch(26.9% 0.063 155.1)
#66C089 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) | #BFB486 | 0.106 |
| Deuteranopia (no green cones) | #B2AA8C | 0.105 |
| Tritanopia (no blue cones) | #51BEB1 | 0.058 |
| Achromatopsia (no color) | #AEAEAE | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66C089
#66C089
oklch(73.7% 0.119 155.3)
- #D88CC7
#D88CC7
oklch(73.6% 0.119 335.3)
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 #66C089, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.027
- Greenblue #23C48B ΔE 0.037
- Faded Green #7BB274 ΔE 0.041
- Dark Mint #48C072 ΔE 0.041
- Sage Green #88B378 ΔE 0.044
- Green Blue #01C08D ΔE 0.044
- Lichen #8FB67B ΔE 0.045
- Dark Sea Green #8FBC8F ΔE 0.045
Use #66C089 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.