#668E51
Closest named color: Light Forest Green (#4F9153). oklch(60.2% 0.098 135.5), rgb(102, 142, 81).
Aa
Black text reads best on this color (5.55:1).
About this color
#668E51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.098 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.025 away. Black text reads best on it, at 5.55:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.55:1 |
| White text | 3.78:1 |
Values
| HEX | #668E51 |
| RGB | rgb(102, 142, 81) |
| HSL | hsl(99, 27%, 44%) |
| OKLCH | oklch(60.2% 0.098 135.5) |
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 #668E51 | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #668E51 | 5.55:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #668E51 text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #668E51 text on black | 5.55:1 | AA | Lc -36.4 | 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
#F3F6F2
oklch(97% 0.006 137.8)
-
Step 100
100
#E6ECE3
oklch(93.6% 0.014 134.9)
-
Step 200
200
#D2DDCC
oklch(88.4% 0.026 134.3)
-
Step 300
300
#B3C8A9
oklch(80.8% 0.048 135.5)
-
Step 400
400
#8CAC7C
oklch(70.8% 0.076 135.4)
-
Step 500
500 (this color)
#668E51
oklch(60.2% 0.098 135.5)
-
Step 600
600
#56813F
oklch(55.6% 0.106 135.7)
-
Step 700
700
#466D31
oklch(49.1% 0.099 135.8)
-
Step 800
800
#3A5929
oklch(42.7% 0.082 135.5)
-
Step 900
900
#324926
oklch(37.6% 0.063 135.6)
-
Step 950
950
#1D2B16
oklch(27% 0.042 135.8)
#668E51 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) | #92854C | 0.063 |
| Deuteranopia (no green cones) | #8C8255 | 0.063 |
| Tritanopia (no blue cones) | #658A7F | 0.070 |
| Achromatopsia (no color) | #838383 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668E51
#668E51
oklch(60.2% 0.098 135.5)
- #976EA9
#976EA9
oklch(60.1% 0.099 315.2)
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 #668E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.025
- Moss Green #658B38 ΔE 0.027
- Fern Green #548D44 ΔE 0.028
- Drab Green #749551 ΔE 0.029
- Khaki Green #728639 ΔE 0.029
- Camo #7F8F4E ΔE 0.033
- Dark Sage #598556 ΔE 0.035
- Swamp #698339 ΔE 0.035
Use #668E51 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.