#668A40
Closest named color: Moss Green (#658B38). oklch(58.9% 0.11 130.6), rgb(102, 138, 64).
Aa
Black text reads best on this color (5.27:1).
About this color
#668A40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.110 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Moss Green (#658B38), ΔE 0.010 away. Black text reads best on it, at 5.27:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Moss Green (#658B38) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #668A40 |
| RGB | rgb(102, 138, 64) |
| HSL | hsl(89, 37%, 40%) |
| OKLCH | oklch(58.9% 0.11 130.6) |
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 #668A40 | 3.98:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #668A40 | 5.27:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #668A40 text on white | 3.98:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #668A40 text on black | 5.27:1 | AA | Lc -34.6 | 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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E6ECE2
oklch(93.6% 0.015 132.5)
-
Step 200
200
#D3DDCA
oklch(88.5% 0.028 129.8)
-
Step 300
300
#B6C8A6
oklch(81% 0.051 130.3)
-
Step 400
400
#90AB77
oklch(70.7% 0.079 130.5)
-
Step 500
500
#749653
oklch(63.1% 0.101 130.8)
-
Step 600
600 (this color)
#668A40
oklch(58.9% 0.11 130.6)
-
Step 700
700
#4C6C28
oklch(49.1% 0.103 130.6)
-
Step 800
800
#3F5823
oklch(42.7% 0.084 130.3)
-
Step 900
900
#354921
oklch(37.8% 0.068 130.9)
-
Step 950
950
#1F2B14
oklch(27.1% 0.043 131.3)
#668A40 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) | #908139 | 0.061 |
| Deuteranopia (no green cones) | #8A7F45 | 0.060 |
| Tritanopia (no blue cones) | #688579 | 0.083 |
| Achromatopsia (no color) | #7F7F7F | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668A40
#668A40
oklch(58.9% 0.11 130.6)
- #9269AD
#9269AD
oklch(58.9% 0.11 311)
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 #668A40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Moss Green #658B38 ΔE 0.010
- Khaki Green #728639 ΔE 0.017
- Swamp #698339 ΔE 0.019
- Fern Green #548D44 ΔE 0.020
- Mossy Green #638B27 ΔE 0.025
- Light Forest Green #4F9153 ΔE 0.030
- Olive Drab #6B8E23 ΔE 0.030
- Dark Sage #598556 ΔE 0.037
Use #668A40 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.