#668B37
Closest named color: Moss Green (#658B38). oklch(59% 0.121 129.4), rgb(102, 139, 55).
Aa
Black text reads best on this color (5.31:1).
About this color
#668B37 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.121 and its hue 129°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Moss Green (#658B38), ΔE 0.001 away. Black text reads best on it, at 5.31:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Moss Green (#658B38) |
| Black text | 5.31:1 |
| White text | 3.95:1 |
Values
| HEX | #668B37 |
| RGB | rgb(102, 139, 55) |
| HSL | hsl(86, 43%, 38%) |
| OKLCH | oklch(59% 0.121 129.4) |
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 #668B37 | 3.95:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #668B37 | 5.31:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #668B37 text on white | 3.95:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #668B37 text on black | 5.31:1 | AA | Lc -34.9 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D3DDC9
oklch(88.4% 0.029 128.8)
-
Step 300
300
#B5C8A3
oklch(80.8% 0.055 129.8)
-
Step 400
400
#8FAC71
oklch(70.8% 0.088 129.7)
-
Step 500
500
#74974B
oklch(63.2% 0.111 129.5)
-
Step 600
600 (this color)
#668B37
oklch(59% 0.121 129.4)
-
Step 700
700
#4C6D1E
oklch(49.2% 0.113 129.5)
-
Step 800
800
#3E591B
oklch(42.8% 0.094 129.7)
-
Step 900
900
#35491D
oklch(37.7% 0.072 129.6)
-
Step 950
950
#1F2B12
oklch(27.1% 0.046 130)
#668B37 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) | #91822E | 0.062 |
| Deuteranopia (no green cones) | #8C7F3D | 0.064 |
| Tritanopia (no blue cones) | #698579 | 0.094 |
| Achromatopsia (no color) | #808080 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668B37
#668B37
oklch(59% 0.121 129.4)
- #9368B3
#9368B3
oklch(59.1% 0.12 309.5)
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 #668B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Moss Green #658B38 ΔE 0.001
- Mossy Green #638B27 ΔE 0.015
- Olive Drab #6B8E23 ΔE 0.020
- Fern Green #548D44 ΔE 0.021
- Khaki Green #728639 ΔE 0.021
- Swamp #698339 ΔE 0.024
- Sap Green #5C8B15 ΔE 0.030
- Swamp Green #748500 ΔE 0.030
Use #668B37 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.