#668D7C
Closest named color: Slate Green (#658D6D). oklch(60.9% 0.051 166), rgb(102, 141, 124).
Aa
Black text reads best on this color (5.66:1).
About this color
#668D7C is a medium-dark, muted green. In OKLCH its lightness is 61%, its chroma 0.051 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.022 away. Black text reads best on it, at 5.66:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.051) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.66:1 |
| White text | 3.70:1 |
Values
| HEX | #668D7C |
| RGB | rgb(102, 141, 124) |
| HSL | hsl(154, 16%, 48%) |
| OKLCH | oklch(60.9% 0.051 166) |
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 #668D7C | 3.70:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #668D7C | 5.66:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #668D7C text on white | 3.70:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #668D7C text on black | 5.66:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D1DCD7
oklch(88.5% 0.014 167.1)
-
Step 300
300
#B2C6BD
oklch(80.9% 0.025 166.9)
-
Step 400
400
#8AA99B
oklch(70.7% 0.04 166.1)
-
Step 500
500 (this color)
#668D7C
oklch(60.9% 0.051 166)
-
Step 600
600
#547E6C
oklch(55.7% 0.055 165.8)
-
Step 700
700
#446A5A
oklch(49.1% 0.051 166.1)
-
Step 800
800
#38574A
oklch(42.8% 0.043 166.3)
-
Step 900
900
#31473E
oklch(37.6% 0.032 167.4)
-
Step 950
950
#1D2A24
oklch(27.1% 0.021 164.8)
#668D7C 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) | #8B887B | 0.050 |
| Deuteranopia (no green cones) | #84837D | 0.048 |
| Tritanopia (no blue cones) | #5D8D88 | 0.020 |
| Achromatopsia (no color) | #858585 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668D7C
#668D7C
oklch(60.9% 0.051 166)
- #9A7789
#9A7789
oklch(60.9% 0.05 346.4)
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 #668D7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.027
- Green Grey #77926F ΔE 0.034
- Grey Teal #5E9B8A ΔE 0.039
- Steel Grey #6F828A ΔE 0.046
- Dull Teal #5F9E8F ΔE 0.048
- Sea #3C9992 ΔE 0.048
- Medium Grey #7D7F7C ΔE 0.049
Use #668D7C 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.