#668B74
Closest named color: Slate Green (#658D6D). oklch(60.2% 0.054 157.1), rgb(102, 139, 116).
Aa
Black text reads best on this color (5.51:1).
About this color
#668B74 is a medium-dark, muted green. In OKLCH its lightness is 60%, its chroma 0.054 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.014 away. Black text reads best on it, at 5.51:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.51:1 |
| White text | 3.81:1 |
Values
| HEX | #668B74 |
| RGB | rgb(102, 139, 116) |
| HSL | hsl(143, 15%, 47%) |
| OKLCH | oklch(60.2% 0.054 157.1) |
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 #668B74 | 3.81:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #668B74 | 5.51:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #668B74 text on white | 3.81:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #668B74 text on black | 5.51:1 | AA | Lc -36.1 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD5
oklch(88.5% 0.014 155.6)
-
Step 300
300
#B3C6BA
oklch(80.9% 0.027 158.1)
-
Step 400
400
#8CA996
oklch(70.7% 0.042 156.5)
-
Step 500
500 (this color)
#668B74
oklch(60.2% 0.054 157.1)
-
Step 600
600
#567E66
oklch(55.6% 0.058 157.5)
-
Step 700
700
#466A54
oklch(49% 0.054 156.9)
-
Step 800
800
#3A5745
oklch(42.8% 0.046 156.6)
-
Step 900
900
#32473A
oklch(37.6% 0.034 157.1)
-
Step 950
950
#1D2A22
oklch(27% 0.023 157.4)
#668B74 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) | #8B8573 | 0.052 |
| Deuteranopia (no green cones) | #848175 | 0.048 |
| Tritanopia (no blue cones) | #608A84 | 0.025 |
| Achromatopsia (no color) | #838383 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668B74
#668B74
oklch(60.2% 0.054 157.1)
- #97758D
#97758D
oklch(60.3% 0.054 337.2)
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 #668B74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.014
- Dusty Teal #4C9085 ΔE 0.032
- Green Grey #77926F ΔE 0.033
- Dark Sage #598556 ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.047
- Medium Grey #7D7F7C ΔE 0.050
- Steel Grey #6F828A ΔE 0.051
- Brown Grey #8D8468 ΔE 0.054
Use #668B74 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.