#66811F
Closest named color: Murky Green (#6C7A0E). oklch(56.3% 0.126 124.1), rgb(102, 129, 31).
Aa
Black text reads best on this color (4.72:1).
About this color
#66811F is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 56%, its chroma 0.126 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Murky Green (#6C7A0E), ΔE 0.020 away. Black text reads best on it, at 4.72:1.
| Hue family | Yellows |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Murky Green (#6C7A0E) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #66811F |
| RGB | rgb(102, 129, 31) |
| HSL | hsl(77, 61%, 31%) |
| OKLCH | oklch(56.3% 0.126 124.1) |
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 #66811F | 4.44:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #66811F | 4.72:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #66811F text on white | 4.44:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #66811F text on black | 4.72:1 | AA | Lc -31.0 | 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
#D5DDC7
oklch(88.5% 0.031 123.3)
-
Step 300
300
#B9C7A0
oklch(80.9% 0.055 123.7)
-
Step 400
400
#95AA6B
oklch(70.6% 0.089 123.7)
-
Step 500
500
#7B9541
oklch(63.1% 0.115 124)
-
Step 600
600 (this color)
#66811F
oklch(56.3% 0.126 124.1)
-
Step 700
700
#536B0C
oklch(49.1% 0.117 124)
-
Step 800
800
#445710
oklch(42.6% 0.096 123.9)
-
Step 900
900
#394816
oklch(37.7% 0.076 124.2)
-
Step 950
950
#222A0E
oklch(27% 0.047 122.9)
#66811F 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) | #89780B | 0.054 |
| Deuteranopia (no green cones) | #857728 | 0.055 |
| Tritanopia (no blue cones) | #6B7A6E | 0.104 |
| Achromatopsia (no color) | #787878 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66811F
#66811F
oklch(56.3% 0.126 124.1)
- #8660B1
#8660B1
oklch(56.3% 0.127 304.3)
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 #66811F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Murky Green #6C7A0E ΔE 0.020
- Olive Green #677A04 ΔE 0.020
- Swamp #698339 ΔE 0.023
- Swamp Green #748500 ΔE 0.026
- Mossy Green #638B27 ΔE 0.028
- Moss Green #658B38 ΔE 0.030
- Khaki Green #728639 ΔE 0.031
- Sap Green #5C8B15 ΔE 0.033
Use #66811F 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.