#668C6D
Closest named color: Slate Green (#658D6D). oklch(60.3% 0.063 149.8), rgb(102, 140, 109).
Aa
Black text reads best on this color (5.53:1).
About this color
#668C6D is a medium-dark, muted green. In OKLCH its lightness is 60%, its chroma 0.063 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.003 away. Black text reads best on it, at 5.53:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #668C6D |
| RGB | rgb(102, 140, 109) |
| HSL | hsl(131, 16%, 47%) |
| OKLCH | oklch(60.3% 0.063 149.8) |
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 #668C6D | 3.79:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #668C6D | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #668C6D text on white | 3.79:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #668C6D text on black | 5.53:1 | AA | Lc -36.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6ECE7
oklch(93.7% 0.009 150.7)
-
Step 200
200
#D2DCD3
oklch(88.4% 0.016 148.4)
-
Step 300
300
#B3C7B6
oklch(81% 0.032 149.7)
-
Step 400
400
#8BAA90
oklch(70.7% 0.051 149.6)
-
Step 500
500 (this color)
#668C6D
oklch(60.3% 0.063 149.8)
-
Step 600
600
#567F5E
oklch(55.7% 0.068 149.8)
-
Step 700
700
#466B4D
oklch(49.1% 0.064 149.5)
-
Step 800
800
#3A573F
oklch(42.6% 0.053 149.1)
-
Step 900
900
#324836
oklch(37.7% 0.041 149.7)
-
Step 950
950
#1D2A20
oklch(26.9% 0.026 151.5)
#668C6D 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) | #8D866B | 0.054 |
| Deuteranopia (no green cones) | #86816F | 0.053 |
| Tritanopia (no blue cones) | #618B83 | 0.034 |
| Achromatopsia (no color) | #838383 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668C6D
#668C6D
oklch(60.3% 0.063 149.8)
- #977493
#977493
oklch(60.4% 0.062 330.2)
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 #668C6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.003
- Green Grey #77926F ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.038
- Dark Sage #598556 ΔE 0.039
- Ocean Green #3D9973 ΔE 0.049
- Grey Teal #5E9B8A ΔE 0.049
- Camo #7F8F4E ΔE 0.051
- Light Forest Green #4F9153 ΔE 0.052
Use #668C6D 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.