#66871B
Closest named color: Mossy Green (#638B27). oklch(57.8% 0.136 125.8), rgb(102, 135, 27).
Aa
Black text reads best on this color (5.04:1).
About this color
#66871B is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.136 and its hue 126°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mossy Green (#638B27), ΔE 0.012 away. Black text reads best on it, at 5.04:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Mossy Green (#638B27) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #66871B |
| RGB | rgb(102, 135, 27) |
| HSL | hsl(78, 67%, 32%) |
| OKLCH | oklch(57.8% 0.136 125.8) |
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 #66871B | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #66871B | 5.04:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #66871B text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #66871B text on black | 5.04:1 | AA | Lc -33.2 | 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
#D3DEC6
oklch(88.6% 0.034 127.3)
-
Step 300
300
#B7C89E
oklch(80.9% 0.06 125.6)
-
Step 400
400
#92AC67
oklch(70.8% 0.098 125.6)
-
Step 500
500
#77963B
oklch(63% 0.124 125.6)
-
Step 600
600 (this color)
#66871B
oklch(57.8% 0.136 125.8)
-
Step 700
700
#4F6C00
oklch(49% 0.125 125.9)
-
Step 800
800
#415807
oklch(42.6% 0.104 125.6)
-
Step 900
900
#374912
oklch(37.7% 0.082 125.8)
-
Step 950
950
#202B0D
oklch(27.1% 0.052 126.4)
#66871B 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) | #8F7D00 | 0.062 |
| Deuteranopia (no green cones) | #8A7C26 | 0.062 |
| Tritanopia (no blue cones) | #6B8073 | 0.110 |
| Achromatopsia (no color) | #7C7C7C | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66871B
#66871B
oklch(57.8% 0.136 125.8)
- #8D62B9
#8D62B9
oklch(57.8% 0.136 305.4)
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 #66871B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mossy Green #638B27 ΔE 0.012
- Sap Green #5C8B15 ΔE 0.017
- Swamp Green #748500 ΔE 0.018
- Moss Green #658B38 ΔE 0.022
- Olive Drab #6B8E23 ΔE 0.022
- Swamp #698339 ΔE 0.030
- Dark Yellow Green #728F02 ΔE 0.031
- Khaki Green #728639 ΔE 0.032
Use #66871B 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.