#66901C
Closest named color: Olive Drab (#6B8E23). oklch(60.1% 0.146 128.3), rgb(102, 144, 28).
Aa
Black text reads best on this color (5.57:1).
About this color
#66901C is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.146 and its hue 128°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Drab (#6B8E23), ΔE 0.010 away. Black text reads best on it, at 5.57:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Olive Drab (#6B8E23) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #66901C |
| RGB | rgb(102, 144, 28) |
| HSL | hsl(82, 67%, 34%) |
| OKLCH | oklch(60.1% 0.146 128.3) |
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 #66901C | 3.76:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #66901C | 5.57:1 | AA | Lc 39.0 | Non-text elements, placeholder text |
| #66901C text on white | 3.76:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #66901C text on black | 5.57:1 | AA | Lc -36.6 | 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
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E6EDDE
oklch(93.7% 0.021 127.4)
-
Step 200
200
#D1DFC3
oklch(88.6% 0.041 129)
-
Step 300
300
#B3CA99
oklch(80.9% 0.071 128.3)
-
Step 400
400
#8BAE5E
oklch(70.6% 0.114 128.4)
-
Step 500
500 (this color)
#66901C
oklch(60.1% 0.146 128.3)
-
Step 600
600
#598200
oklch(55.5% 0.146 128.3)
-
Step 700
700
#4A6D00
oklch(48.9% 0.129 128.3)
-
Step 800
800
#3C5A00
oklch(42.8% 0.113 128.5)
-
Step 900
900
#324B05
oklch(37.8% 0.096 128.6)
-
Step 950
950
#1D2C07
oklch(27% 0.062 128.9)
#66901C 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) | #978500 | 0.071 |
| Deuteranopia (no green cones) | #928328 | 0.073 |
| Tritanopia (no blue cones) | #6A897B | 0.117 |
| Achromatopsia (no color) | #838383 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66901C
#66901C
oklch(60.1% 0.146 128.3)
- #9965C3
#9965C3
oklch(60.1% 0.147 308.1)
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 #66901C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Drab #6B8E23 ΔE 0.010
- Dark Yellow Green #728F02 ΔE 0.015
- Mossy Green #638B27 ΔE 0.018
- Sap Green #5C8B15 ΔE 0.020
- Moss Green #658B38 ΔE 0.029
- Swamp Green #748500 ΔE 0.032
- Fern Green #548D44 ΔE 0.039
- Khaki Green #728639 ΔE 0.045
Use #66901C 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.