#66BD8C
Closest named color: Soft Green (#6FC276). oklch(73% 0.112 157.4), rgb(102, 189, 140).
Aa
Black text reads best on this color (9.22:1).
About this color
#66BD8C is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.112 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.036 away. Black text reads best on it, at 9.22:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 9.22:1 |
| White text | 2.27:1 |
Values
| HEX | #66BD8C |
| RGB | rgb(102, 189, 140) |
| HSL | hsl(146, 40%, 57%) |
| OKLCH | oklch(73% 0.112 157.4) |
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 #66BD8C | 2.27:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #66BD8C | 9.22:1 | AAA | Lc 59.2 | Large or bold text, headings |
| #66BD8C text on white | 2.27:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #66BD8C text on black | 9.22:1 | AAA | Lc -57.4 | 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
#DFEEE5
oklch(93.5% 0.02 159.7)
-
Step 200
200
#C5E1CF
oklch(88.4% 0.038 157.3)
-
Step 300
300
#9BCFAF
oklch(80.9% 0.071 157.4)
-
Step 400
400 (this color)
#66BD8C
oklch(73% 0.112 157.4)
-
Step 500
500
#1AA266
oklch(63% 0.142 157.5)
-
Step 600
600
#008954
oklch(55.5% 0.13 157.7)
-
Step 700
700
#007446
oklch(49.2% 0.116 157.5)
-
Step 800
800
#005F38
oklch(42.7% 0.101 157.3)
-
Step 900
900
#004F2E
oklch(37.6% 0.089 157.5)
-
Step 950
950
#052F1B
oklch(27.1% 0.059 157.6)
#66BD8C 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) | #BCB189 | 0.104 |
| Deuteranopia (no green cones) | #AFA88F | 0.101 |
| Tritanopia (no blue cones) | #50BCB0 | 0.052 |
| Achromatopsia (no color) | #ACACAC | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BD8C
#66BD8C
oklch(73% 0.112 157.4)
- #D58CC1
#D58CC1
oklch(73% 0.112 337.3)
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 #66BD8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.036
- Faded Green #7BB274 ΔE 0.037
- Sage Green #88B378 ΔE 0.041
- Greenblue #23C48B ΔE 0.041
- Dark Sea Green #8FBC8F ΔE 0.043
- Lichen #8FB67B ΔE 0.043
- Green Blue #01C08D ΔE 0.044
- Greeny Blue #42B395 ΔE 0.046
Use #66BD8C 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.