#66903F
Closest named color: Moss Green (#658B38). oklch(60.4% 0.12 131.9), rgb(102, 144, 63).
Aa
Black text reads best on this color (5.62:1).
About this color
#66903F is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.120 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Moss Green (#658B38), ΔE 0.015 away. Black text reads best on it, at 5.62:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Moss Green (#658B38) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #66903F |
| RGB | rgb(102, 144, 63) |
| HSL | hsl(91, 39%, 41%) |
| OKLCH | oklch(60.4% 0.12 131.9) |
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 #66903F | 3.73:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #66903F | 5.62:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #66903F text on white | 3.73:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #66903F text on black | 5.62:1 | AA | Lc -36.9 | 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 500.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D1DEC8
oklch(88.5% 0.033 132.3)
-
Step 300
300
#B3C9A2
oklch(80.9% 0.059 131.7)
-
Step 400
400
#8BAD6F
oklch(70.7% 0.094 131.8)
-
Step 500
500 (this color)
#66903F
oklch(60.4% 0.12 131.9)
-
Step 600
600
#568227
oklch(55.5% 0.13 131.7)
-
Step 700
700
#466E19
oklch(49.1% 0.121 131.8)
-
Step 800
800
#3A5A18
oklch(42.8% 0.1 131.8)
-
Step 900
900
#324A1A
oklch(37.7% 0.079 131.5)
-
Step 950
950
#1D2B11
oklch(26.9% 0.048 132.2)
#66903F 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) | #968637 | 0.069 |
| Deuteranopia (no green cones) | #908344 | 0.069 |
| Tritanopia (no blue cones) | #678B7E | 0.090 |
| Achromatopsia (no color) | #848484 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66903F
#66903F
oklch(60.4% 0.12 131.9)
- #996BB5
#996BB5
oklch(60.4% 0.12 311.8)
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 #66903F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Moss Green #658B38 ΔE 0.015
- Olive Drab #6B8E23 ΔE 0.022
- Fern Green #548D44 ΔE 0.023
- Mossy Green #638B27 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.029
- Khaki Green #728639 ΔE 0.030
- Drab Green #749551 ΔE 0.031
- Dark Yellow Green #728F02 ΔE 0.035
Use #66903F 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.