#668A70
Closest named color: Slate Green (#658D6D). oklch(59.9% 0.056 153.1), rgb(102, 138, 112).
Aa
Black text reads best on this color (5.43:1).
About this color
#668A70 is a medium-dark, muted green. In OKLCH its lightness is 60%, its chroma 0.056 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.011 away. Black text reads best on it, at 5.43:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #668A70 |
| RGB | rgb(102, 138, 112) |
| HSL | hsl(137, 15%, 47%) |
| OKLCH | oklch(59.9% 0.056 153.1) |
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 #668A70 | 3.86:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #668A70 | 5.43:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #668A70 text on white | 3.86:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #668A70 text on black | 5.43:1 | AA | Lc -35.6 | 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
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D2DCD4
oklch(88.5% 0.015 151.7)
-
Step 300
300
#B4C6B8
oklch(80.9% 0.028 152.3)
-
Step 400
400
#8CA994
oklch(70.7% 0.044 153.7)
-
Step 500
500 (this color)
#668A70
oklch(59.9% 0.056 153.1)
-
Step 600
600
#577E62
oklch(55.6% 0.062 152.9)
-
Step 700
700
#476A51
oklch(49% 0.057 152.9)
-
Step 800
800
#3B5743
oklch(42.8% 0.047 153)
-
Step 900
900
#324738
oklch(37.5% 0.037 153.3)
-
Step 950
950
#1E2A21
oklch(27.1% 0.023 152.3)
#668A70 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) | #8A846F | 0.051 |
| Deuteranopia (no green cones) | #848071 | 0.049 |
| Tritanopia (no blue cones) | #618983 | 0.030 |
| Achromatopsia (no color) | #828282 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668A70
#668A70
oklch(59.9% 0.056 153.1)
- #95748E
#95748E
oklch(60% 0.055 333.8)
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 #668A70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.011
- Green Grey #77926F ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.036
- Dark Sage #598556 ΔE 0.042
- Grey Teal #5E9B8A ΔE 0.051
- Medium Grey #7D7F7C ΔE 0.052
- Brown Grey #8D8468 ΔE 0.053
- Ocean Green #3D9973 ΔE 0.054
Use #668A70 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.