#668778
Closest named color: Slate Green (#658D6D). oklch(59.4% 0.044 165.3), rgb(102, 135, 120).
Aa
Black text reads best on this color (5.30:1).
About this color
#668778 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.044 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.028 away. Black text reads best on it, at 5.30:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.30:1 |
| White text | 3.96:1 |
Values
| HEX | #668778 |
| RGB | rgb(102, 135, 120) |
| HSL | hsl(153, 14%, 46%) |
| OKLCH | oklch(59.4% 0.044 165.3) |
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 #668778 | 3.96:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #668778 | 5.30:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #668778 text on white | 3.96:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #668778 text on black | 5.30:1 | AA | Lc -34.7 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B5C5BD
oklch(80.9% 0.021 164.5)
-
Step 400
400
#8DA89B
oklch(70.7% 0.035 164.7)
-
Step 500
500 (this color)
#668778
oklch(59.4% 0.044 165.3)
-
Step 600
600
#597C6D
oklch(55.5% 0.046 166.4)
-
Step 700
700
#49695B
oklch(49.2% 0.044 165.7)
-
Step 800
800
#3C564A
oklch(42.8% 0.037 164.5)
-
Step 900
900
#33473E
oklch(37.8% 0.03 165.4)
-
Step 950
950
#1E2924
oklch(26.9% 0.018 165.6)
#668778 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) | #868277 | 0.045 |
| Deuteranopia (no green cones) | #807E79 | 0.043 |
| Tritanopia (no blue cones) | #5F8783 | 0.018 |
| Achromatopsia (no color) | #808080 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668778
#668778
oklch(59.4% 0.044 165.3)
- #927484
#927484
oklch(59.3% 0.044 345.2)
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 #668778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.034
- Steel Grey #6F828A ΔE 0.038
- Medium Grey #7D7F7C ΔE 0.040
- Battleship Grey #6B7C85 ΔE 0.044
- Gray #808080 ΔE 0.044
- Green Grey #77926F ΔE 0.046
- Slate Gray #708090 ΔE 0.050
Use #668778 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.