#668E72
Closest named color: Slate Green (#658D6D). oklch(60.9% 0.061 153.8), rgb(102, 142, 114).
Aa
Black text reads best on this color (5.67:1).
About this color
#668E72 is a medium-dark, muted green. In OKLCH its lightness is 61%, its chroma 0.061 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.007 away. Black text reads best on it, at 5.67:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.67:1 |
| White text | 3.69:1 |
Values
| HEX | #668E72 |
| RGB | rgb(102, 142, 114) |
| HSL | hsl(138, 16%, 48%) |
| OKLCH | oklch(60.9% 0.061 153.8) |
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 #668E72 | 3.69:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #668E72 | 5.67:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #668E72 text on white | 3.69:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #668E72 text on black | 5.67:1 | AA | Lc -37.1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E6ECE7
oklch(93.7% 0.009 150.7)
-
Step 200
200
#D1DCD4
oklch(88.4% 0.016 154.4)
-
Step 300
300
#B3C7B8
oklch(81% 0.03 153.2)
-
Step 400
400
#8AAA93
oklch(70.7% 0.048 153.8)
-
Step 500
500 (this color)
#668E72
oklch(60.9% 0.061 153.8)
-
Step 600
600
#547F61
oklch(55.6% 0.067 153.4)
-
Step 700
700
#446B50
oklch(49% 0.062 153.4)
-
Step 800
800
#385742
oklch(42.6% 0.051 154.1)
-
Step 900
900
#314838
oklch(37.7% 0.04 153.8)
-
Step 950
950
#1D2A21
oklch(27% 0.024 154.3)
#668E72 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) | #8E8870 | 0.055 |
| Deuteranopia (no green cones) | #878374 | 0.053 |
| Tritanopia (no blue cones) | #608D86 | 0.031 |
| Achromatopsia (no color) | #858585 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668E72
#668E72
oklch(60.9% 0.061 153.8)
- #9A7592
#9A7592
oklch(60.8% 0.062 334.1)
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 #668E72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.007
- Green Grey #77926F ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.034
- Grey Teal #5E9B8A ΔE 0.042
- Dark Sage #598556 ΔE 0.047
- Ocean Green #3D9973 ΔE 0.047
- Dull Teal #5F9E8F ΔE 0.051
- Sea #3C9992 ΔE 0.054
Use #668E72 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.