#66903A
Closest named color: Moss Green (#658B38). oklch(60.3% 0.125 131.1), rgb(102, 144, 58).
Aa
Black text reads best on this color (5.61:1).
About this color
#66903A is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.125 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 0.015 away. Black text reads best on it, at 5.61:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Moss Green (#658B38) |
| Black text | 5.61:1 |
| White text | 3.73:1 |
Values
| HEX | #66903A |
| RGB | rgb(102, 144, 58) |
| HSL | hsl(89, 43%, 40%) |
| OKLCH | oklch(60.3% 0.125 131.1) |
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 #66903A | 3.73:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #66903A | 5.61:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #66903A text on white | 3.73:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #66903A text on black | 5.61:1 | AA | Lc -36.8 | 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
#E6ECE0
oklch(93.5% 0.017 128.7)
-
Step 200
200
#D1DEC7
oklch(88.4% 0.034 131.4)
-
Step 300
300
#B3C9A0
oklch(80.8% 0.061 130.7)
-
Step 400
400
#8BAD6C
oklch(70.6% 0.097 131)
-
Step 500
500 (this color)
#66903A
oklch(60.3% 0.125 131.1)
-
Step 600
600
#56831F
oklch(55.7% 0.137 131.1)
-
Step 700
700
#466E10
oklch(49% 0.126 131)
-
Step 800
800
#3A5A12
oklch(42.7% 0.105 130.9)
-
Step 900
900
#324A17
oklch(37.7% 0.082 130.8)
-
Step 950
950
#1D2B0F
oklch(26.8% 0.051 131.1)
#66903A 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) | #968631 | 0.069 |
| Deuteranopia (no green cones) | #908340 | 0.069 |
| Tritanopia (no blue cones) | #688A7D | 0.095 |
| Achromatopsia (no color) | #848484 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66903A
#66903A
oklch(60.3% 0.125 131.1)
- #996AB8
#996AB8
oklch(60.4% 0.125 310.8)
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 #66903A, 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 0.017
- Mossy Green #638B27 ΔE 0.020
- Fern Green #548D44 ΔE 0.025
- Dark Yellow Green #728F02 ΔE 0.030
- Khaki Green #728639 ΔE 0.031
- Light Forest Green #4F9153 ΔE 0.032
- Sap Green #5C8B15 ΔE 0.033
Use #66903A 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.