#647B59
Closest named color: Dark Sage (#598556). oklch(55.5% 0.058 135.7), rgb(100, 123, 89).
Aa
White text reads best on this color (4.64:1).
About this color
#647B59 is a medium-dark, muted green. In OKLCH its lightness is 55%, its chroma 0.058 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.034 away. White text reads best on it, at 4.64:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.51:1 |
| White text | 4.64:1 |
Values
| HEX | #647B59 |
| RGB | rgb(100, 123, 89) |
| HSL | hsl(101, 16%, 42%) |
| OKLCH | oklch(55.5% 0.058 135.7) |
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 #647B59 | 4.64:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #647B59 | 4.51:1 | AA | Lc 31.8 | Non-text elements, placeholder text |
| #647B59 text on white | 4.64:1 | AA | Lc 72.3 | Content text, not long reading |
| #647B59 text on black | 4.51:1 | AA | Lc -29.4 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE6
oklch(93.6% 0.007 132.4)
-
Step 200
200
#D5DBD2
oklch(88.4% 0.014 134.9)
-
Step 300
300
#B9C5B4
oklch(80.9% 0.027 136.3)
-
Step 400
400
#95A78D
oklch(70.7% 0.042 136)
-
Step 500
500
#7B9171
oklch(63% 0.053 136)
-
Step 600
600 (this color)
#647B59
oklch(55.5% 0.058 135.7)
-
Step 700
700
#536849
oklch(49.1% 0.054 135.8)
-
Step 800
800
#44553C
oklch(42.8% 0.045 135.8)
-
Step 900
900
#394633
oklch(37.7% 0.036 135.9)
-
Step 950
950
#22291E
oklch(27% 0.022 134.3)
#647B59 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) | #7E7657 | 0.039 |
| Deuteranopia (no green cones) | #7A745B | 0.038 |
| Tritanopia (no blue cones) | #647872 | 0.041 |
| Achromatopsia (no color) | #747474 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647B59
#647B59
oklch(55.5% 0.058 135.7)
- #80698A
#80698A
oklch(55.5% 0.057 315.5)
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 #647B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.034
- Military Green #667C3E ΔE 0.036
- Muddy Green #657432 ΔE 0.046
- Grey Brown #7F7053 ΔE 0.047
- Slate Green #658D6D ΔE 0.053
- Swamp #698339 ΔE 0.053
- Dark Moss Green #606C38 ΔE 0.053
- Drab #828344 ΔE 0.058
Use #647B59 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.