#66971F
Closest named color: Dark Yellow Green (#728F02). oklch(61.9% 0.154 130), rgb(102, 151, 31).
Aa
Black text reads best on this color (6.01:1).
About this color
#66971F is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.154 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Yellow Green (#728F02), ΔE 0.024 away. Black text reads best on it, at 6.01:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 6.01:1 |
| White text | 3.49:1 |
Values
| HEX | #66971F |
| RGB | rgb(102, 151, 31) |
| HSL | hsl(84, 66%, 36%) |
| OKLCH | oklch(61.9% 0.154 130) |
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 #66971F | 3.49:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #66971F | 6.01:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #66971F text on white | 3.49:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #66971F text on black | 6.01:1 | AA | Lc -39.4 | 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 500.
-
Step 50
50
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E5EDDE
oklch(93.6% 0.022 130)
-
Step 200
200
#D0DFC2
oklch(88.5% 0.042 129.7)
-
Step 300
300
#B1CB98
oklch(81% 0.075 129.9)
-
Step 400
400
#87AF5C
oklch(70.6% 0.12 130.1)
-
Step 500
500 (this color)
#66971F
oklch(61.9% 0.154 130)
-
Step 600
600
#558300
oklch(55.5% 0.149 129.9)
-
Step 700
700
#476E00
oklch(49% 0.131 129.8)
-
Step 800
800
#395A00
oklch(42.6% 0.114 129.9)
-
Step 900
900
#2F4B02
oklch(37.6% 0.1 130)
-
Step 950
950
#1C2C06
oklch(26.9% 0.063 129.6)
#66971F 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) | #9E8B00 | 0.079 |
| Deuteranopia (no green cones) | #98882C | 0.082 |
| Tritanopia (no blue cones) | #699081 | 0.120 |
| Achromatopsia (no color) | #898989 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66971F
#66971F
oklch(61.9% 0.154 130)
- #A268CA
#A268CA
oklch(61.9% 0.153 309.9)
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 #66971F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.024
- Olive Drab #6B8E23 ΔE 0.027
- Mossy Green #638B27 ΔE 0.037
- Sap Green #5C8B15 ΔE 0.038
- Flat Green #699D4C ΔE 0.038
- Grass Green #3F9B0B ΔE 0.041
- Grassy Green #419C03 ΔE 0.041
- Muted Green #5FA052 ΔE 0.043
Use #66971F 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.