#668D59
Closest named color: Slate Green (#658D6D). oklch(60.1% 0.088 138.1), rgb(102, 141, 89).
Aa
Black text reads best on this color (5.51:1).
About this color
#668D59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.088 and its hue 138°. 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 5.51:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.51:1 |
| White text | 3.80:1 |
Values
| HEX | #668D59 |
| RGB | rgb(102, 141, 89) |
| HSL | hsl(105, 23%, 45%) |
| OKLCH | oklch(60.1% 0.088 138.1) |
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 #668D59 | 3.80:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #668D59 | 5.51:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #668D59 text on white | 3.80:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #668D59 text on black | 5.51:1 | AA | Lc -36.2 | 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
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E6ECE4
oklch(93.6% 0.012 137.8)
-
Step 200
200
#D2DDCE
oklch(88.5% 0.023 137.3)
-
Step 300
300
#B3C8AD
oklch(80.9% 0.044 138.7)
-
Step 400
400
#8CAB82
oklch(70.7% 0.068 138.1)
-
Step 500
500 (this color)
#668D59
oklch(60.1% 0.088 138.1)
-
Step 600
600
#578048
oklch(55.5% 0.094 137.7)
-
Step 700
700
#476C3A
oklch(49% 0.087 138)
-
Step 800
800
#3A5830
oklch(42.6% 0.073 138.2)
-
Step 900
900
#32492B
oklch(37.8% 0.057 138.6)
-
Step 950
950
#1E2B19
oklch(27.1% 0.037 137.3)
#668D59 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) | #908555 | 0.060 |
| Deuteranopia (no green cones) | #8A815C | 0.060 |
| Tritanopia (no blue cones) | #648A80 | 0.059 |
| Achromatopsia (no color) | #838383 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668D59
#668D59
oklch(60.1% 0.088 138.1)
- #966FA2
#966FA2
oklch(59.9% 0.088 318.1)
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 #668D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.028
- Dark Sage #598556 ΔE 0.030
- Light Forest Green #4F9153 ΔE 0.030
- Drab Green #749551 ΔE 0.034
- Camo #7F8F4E ΔE 0.035
- Khaki Green #728639 ΔE 0.035
- Fern Green #548D44 ΔE 0.036
- Moss Green #658B38 ΔE 0.037
Use #668D59 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.