#66851F
Closest named color: Mossy Green (#638B27). oklch(57.3% 0.131 125.4), rgb(102, 133, 31).
Aa
Black text reads best on this color (4.93:1).
About this color
#66851F is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.131 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mossy Green (#638B27), ΔE 0.017 away. Black text reads best on it, at 4.93:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Mossy Green (#638B27) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #66851F |
| RGB | rgb(102, 133, 31) |
| HSL | hsl(78, 62%, 32%) |
| OKLCH | oklch(57.3% 0.131 125.4) |
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 #66851F | 4.25:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #66851F | 4.93:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #66851F text on white | 4.25:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #66851F text on black | 4.93:1 | AA | Lc -32.4 | 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 600.
-
Step 50
50
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E7ECE0
oklch(93.6% 0.017 125.3)
-
Step 200
200
#D4DDC6
oklch(88.4% 0.032 124.5)
-
Step 300
300
#B7C89F
oklch(80.9% 0.059 126)
-
Step 400
400
#93AB69
oklch(70.7% 0.094 125)
-
Step 500
500
#78963E
oklch(63.1% 0.121 125.5)
-
Step 600
600 (this color)
#66851F
oklch(57.3% 0.131 125.4)
-
Step 700
700
#506C06
oklch(49.1% 0.122 125.6)
-
Step 800
800
#42580D
oklch(42.7% 0.1 125.4)
-
Step 900
900
#384915
oklch(37.9% 0.079 125.4)
-
Step 950
950
#212B0E
oklch(27.2% 0.05 125.4)
#66851F 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) | #8D7C09 | 0.058 |
| Deuteranopia (no green cones) | #887A29 | 0.060 |
| Tritanopia (no blue cones) | #6B7E72 | 0.107 |
| Achromatopsia (no color) | #7B7B7B | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66851F
#66851F
oklch(57.3% 0.131 125.4)
- #8B62B5
#8B62B5
oklch(57.4% 0.13 305.5)
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 #66851F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mossy Green #638B27 ΔE 0.017
- Swamp Green #748500 ΔE 0.020
- Moss Green #658B38 ΔE 0.022
- Sap Green #5C8B15 ΔE 0.023
- Swamp #698339 ΔE 0.025
- Olive Drab #6B8E23 ΔE 0.027
- Khaki Green #728639 ΔE 0.029
- Murky Green #6C7A0E ΔE 0.031
Use #66851F 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.