#668666
Closest named color: Slate Green (#658D6D). oklch(58.6% 0.06 144.8), rgb(102, 134, 102).
Aa
Black text reads best on this color (5.16:1).
About this color
#668666 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.060 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.020 away. Black text reads best on it, at 5.16:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #668666 |
| RGB | rgb(102, 134, 102) |
| HSL | hsl(120, 14%, 46%) |
| OKLCH | oklch(58.6% 0.06 144.8) |
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 #668666 | 4.06:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #668666 | 5.16:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #668666 text on white | 4.06:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #668666 text on black | 5.16:1 | AA | Lc -33.8 | 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 600.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE7
oklch(93.6% 0.007 145.5)
-
Step 200
200
#D3DCD3
oklch(88.5% 0.016 145.4)
-
Step 300
300
#B6C6B6
oklch(81% 0.028 145.3)
-
Step 400
400
#90A890
oklch(70.6% 0.044 145.1)
-
Step 500
500
#759375
oklch(63.2% 0.056 144.9)
-
Step 600
600 (this color)
#668666
oklch(58.6% 0.06 144.8)
-
Step 700
700
#4D694D
oklch(49% 0.055 144.7)
-
Step 800
800
#3F563F
oklch(42.7% 0.047 144.7)
-
Step 900
900
#364736
oklch(37.8% 0.036 144.8)
-
Step 950
950
#202A20
oklch(27.2% 0.023 144.9)
#668666 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) | #878064 | 0.047 |
| Deuteranopia (no green cones) | #827D68 | 0.046 |
| Tritanopia (no blue cones) | #63847D | 0.037 |
| Achromatopsia (no color) | #7E7E7E | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668666
#668666
oklch(58.6% 0.06 144.8)
- #8F7090
#8F7090
oklch(58.6% 0.06 325.3)
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 #668666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.020
- Dark Sage #598556 ΔE 0.029
- Green Grey #77926F ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.048
- Drab #828344 ΔE 0.051
- Military Green #667C3E ΔE 0.051
- Swamp #698339 ΔE 0.054
- Light Forest Green #4F9153 ΔE 0.055
Use #668666 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.