#66BB91
Closest named color: Faded Green (#7BB274). oklch(72.7% 0.104 160.7), rgb(102, 187, 145).
Aa
Black text reads best on this color (9.08:1).
About this color
#66BB91 is a medium-light, moderately saturated green. In OKLCH its lightness is 73%, its chroma 0.104 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Faded Green (#7BB274), ΔE 0.039 away. Black text reads best on it, at 9.08:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Faded Green (#7BB274) |
| Black text | 9.08:1 |
| White text | 2.31:1 |
Values
| HEX | #66BB91 |
| RGB | rgb(102, 187, 145) |
| HSL | hsl(150, 38%, 57%) |
| OKLCH | oklch(72.7% 0.104 160.7) |
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 #66BB91 | 2.31:1 | Fails | Lc -50.3 | Large or bold text, headings |
| Black text on #66BB91 | 9.08:1 | AAA | Lc 58.5 | Large or bold text, headings |
| #66BB91 text on white | 2.31:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #66BB91 text on black | 9.08:1 | AAA | Lc -56.7 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E0EEE6
oklch(93.6% 0.018 161.1)
-
Step 200
200
#C5E1D1
oklch(88.5% 0.037 160.5)
-
Step 300
300
#9CCEB3
oklch(80.9% 0.065 160.9)
-
Step 400
400 (this color)
#66BB91
oklch(72.7% 0.104 160.7)
-
Step 500
500
#1FA26E
oklch(63.2% 0.134 160.5)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005E3D
oklch(42.6% 0.095 160.9)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#062E1D
oklch(26.9% 0.054 160.6)
#66BB91 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) | #B9B08F | 0.100 |
| Deuteranopia (no green cones) | #ACA794 | 0.096 |
| Tritanopia (no blue cones) | #4FBAAF | 0.045 |
| Achromatopsia (no color) | #AAAAAA | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BB91
#66BB91
oklch(72.7% 0.104 160.7)
- #D38CBA
#D38CBA
oklch(72.6% 0.104 340.9)
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 #66BB91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Green #7BB274 ΔE 0.039
- Greeny Blue #42B395 ΔE 0.039
- Sage Green #88B378 ΔE 0.042
- Dark Sea Green #8FBC8F ΔE 0.043
- Lichen #8FB67B ΔE 0.045
- Soft Green #6FC276 ΔE 0.046
- Tea #65AB7C ΔE 0.047
- Greenblue #23C48B ΔE 0.047
Use #66BB91 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.