#647A39
Closest named color: Military Green (#667C3E). oklch(54.6% 0.095 124.9), rgb(100, 122, 57).
Aa
White text reads best on this color (4.78:1).
About this color
#647A39 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 55%, its chroma 0.095 and its hue 125°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Military Green (#667C3E), ΔE 0.008 away. White text reads best on it, at 4.78:1.
| Hue family | Yellows |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Military Green (#667C3E) |
| Black text | 4.38:1 |
| White text | 4.78:1 |
Values
| HEX | #647A39 |
| RGB | rgb(100, 122, 57) |
| HSL | hsl(80, 36%, 35%) |
| OKLCH | oklch(54.6% 0.095 124.9) |
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 #647A39 | 4.78:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #647A39 | 4.38:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #647A39 text on white | 4.78:1 | AA | Lc 73.2 | Content text, not long reading |
| #647A39 text on black | 4.38:1 | AA large text | Lc -28.5 | 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
#D5DCCB
oklch(88.4% 0.024 125.2)
-
Step 300
300
#BAC6A8
oklch(80.9% 0.043 125.1)
-
Step 400
400
#97A87A
oklch(70.6% 0.067 124.6)
-
Step 500
500
#7D9357
oklch(63.1% 0.088 125.2)
-
Step 600
600 (this color)
#647A39
oklch(54.6% 0.095 124.9)
-
Step 700
700
#55692E
oklch(49% 0.088 125.1)
-
Step 800
800
#465627
oklch(42.8% 0.073 124.9)
-
Step 900
900
#3B4724
oklch(37.8% 0.057 124.6)
-
Step 950
950
#222A16
oklch(27.1% 0.037 126.5)
#647A39 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) | #807333 | 0.043 |
| Deuteranopia (no green cones) | #7D723D | 0.044 |
| Tritanopia (no blue cones) | #68756B | 0.076 |
| Achromatopsia (no color) | #727272 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647A39
#647A39
oklch(54.6% 0.095 124.9)
- #7D629D
#7D629D
oklch(54.7% 0.094 304.5)
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 #647A39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Military Green #667C3E ΔE 0.008
- Muddy Green #657432 ΔE 0.017
- Swamp #698339 ΔE 0.028
- Murky Green #6C7A0E ΔE 0.031
- Olive Green #677A04 ΔE 0.035
- Dark Sage #598556 ΔE 0.039
- Khaki Green #728639 ΔE 0.042
- Dark Moss Green #606C38 ΔE 0.043
Use #647A39 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.