#647C40
Closest named color: Military Green (#667C3E). oklch(55.3% 0.09 127), rgb(100, 124, 64).
Aa
White text reads best on this color (4.66:1).
About this color
#647C40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.090 and its hue 127°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.003 away. White text reads best on it, at 4.66:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.49:1 |
| White text | 4.66:1 |
Values
| HEX | #647C40 |
| RGB | rgb(100, 124, 64) |
| HSL | hsl(84, 32%, 37%) |
| OKLCH | oklch(55.3% 0.09 127) |
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 #647C40 | 4.66:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #647C40 | 4.49:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #647C40 text on white | 4.66:1 | AA | Lc 72.4 | Content text, not long reading |
| #647C40 text on black | 4.49:1 | AA large text | Lc -29.3 | Dividers and decoration only |
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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E8EBE3
oklch(93.6% 0.011 123.5)
-
Step 200
200
#D5DCCC
oklch(88.5% 0.023 126.3)
-
Step 300
300
#B9C6AA
oklch(80.9% 0.041 127.7)
-
Step 400
400
#96A97D
oklch(70.8% 0.065 127)
-
Step 500
500
#7C935B
oklch(63.1% 0.083 126.8)
-
Step 600
600 (this color)
#647C40
oklch(55.3% 0.09 127)
-
Step 700
700
#546933
oklch(49% 0.083 126.7)
-
Step 800
800
#45562B
oklch(42.7% 0.069 126.8)
-
Step 900
900
#3A4727
oklch(37.7% 0.054 126.8)
-
Step 950
950
#222A17
oklch(27.1% 0.035 127.2)
#647C40 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) | #81753B | 0.044 |
| Deuteranopia (no green cones) | #7E7443 | 0.045 |
| Tritanopia (no blue cones) | #67776E | 0.072 |
| Achromatopsia (no color) | #747474 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647C40
#647C40
oklch(55.3% 0.09 127)
- #80649B
#80649B
oklch(55.3% 0.089 307)
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 #647C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.003
- Muddy Green #657432 ΔE 0.024
- Swamp #698339 ΔE 0.026
- Dark Sage #598556 ΔE 0.031
- Murky Green #6C7A0E ΔE 0.037
- Khaki Green #728639 ΔE 0.039
- Olive Green #677A04 ΔE 0.041
- Dark Moss Green #606C38 ΔE 0.048
Use #647C40 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.