#668F5B
Closest named color: Slate Green (#658D6D). oklch(60.6% 0.089 139.2), rgb(102, 143, 91).
Aa
Black text reads best on this color (5.64:1).
About this color
#668F5B is a medium-dark, moderately saturated green. In OKLCH its lightness is 61%, its chroma 0.089 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.027 away. Black text reads best on it, at 5.64:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.64:1 |
| White text | 3.72:1 |
Values
| HEX | #668F5B |
| RGB | rgb(102, 143, 91) |
| HSL | hsl(107, 22%, 46%) |
| OKLCH | oklch(60.6% 0.089 139.2) |
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 #668F5B | 3.72:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #668F5B | 5.64:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #668F5B text on white | 3.72:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #668F5B text on black | 5.64:1 | AA | Lc -37.0 | 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
#F3F6F3
oklch(97% 0.005 145.5)
-
Step 100
100
#E6ECE4
oklch(93.6% 0.012 137.8)
-
Step 200
200
#D1DDCE
oklch(88.4% 0.024 139.4)
-
Step 300
300
#B3C8AD
oklch(80.9% 0.044 138.7)
-
Step 400
400
#8BAC82
oklch(70.8% 0.07 139)
-
Step 500
500 (this color)
#668F5B
oklch(60.6% 0.089 139.2)
-
Step 600
600
#558149
oklch(55.7% 0.096 139.1)
-
Step 700
700
#456D3A
oklch(49.2% 0.09 139.1)
-
Step 800
800
#395930
oklch(42.8% 0.075 139)
-
Step 900
900
#31492B
oklch(37.7% 0.058 139.5)
-
Step 950
950
#1D2B19
oklch(27% 0.038 138.9)
#668F5B 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) | #928757 | 0.062 |
| Deuteranopia (no green cones) | #8C835E | 0.062 |
| Tritanopia (no blue cones) | #648C82 | 0.059 |
| Achromatopsia (no color) | #848484 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668F5B
#668F5B
oklch(60.6% 0.089 139.2)
- #9971A4
#9971A4
oklch(60.7% 0.088 318.9)
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 #668F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.027
- Light Forest Green #4F9153 ΔE 0.030
- Drab Green #749551 ΔE 0.030
- Camo #7F8F4E ΔE 0.033
- Dark Sage #598556 ΔE 0.035
- Green Grey #77926F ΔE 0.037
- Fern Green #548D44 ΔE 0.038
- Moss #769958 ΔE 0.038
Use #668F5B 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.