#647F57
Closest named color: Dark Sage (#598556). oklch(56.4% 0.067 135.8), rgb(100, 127, 87).
Aa
Black text reads best on this color (4.71:1).
About this color
#647F57 is a medium-dark, muted green. In OKLCH its lightness is 56%, its chroma 0.067 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 0.022 away. Black text reads best on it, at 4.71:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #647F57 |
| RGB | rgb(100, 127, 87) |
| HSL | hsl(101, 19%, 42%) |
| OKLCH | oklch(56.4% 0.067 135.8) |
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 #647F57 | 4.45:1 | AA large text | Lc -76.4 | Fine for body text |
| Black text on #647F57 | 4.71:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #647F57 text on white | 4.45:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #647F57 text on black | 4.71:1 | AA | Lc -30.8 | 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 600.
-
Step 50
50
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE5
oklch(93.5% 0.009 134.9)
-
Step 200
200
#D4DCD1
oklch(88.5% 0.017 137)
-
Step 300
300
#B8C5B2
oklch(80.8% 0.03 135.6)
-
Step 400
400
#93A88A
oklch(70.7% 0.049 136.3)
-
Step 500
500
#79926D
oklch(63% 0.061 135.6)
-
Step 600
600 (this color)
#647F57
oklch(56.4% 0.067 135.8)
-
Step 700
700
#516945
oklch(49.1% 0.062 135.6)
-
Step 800
800
#425639
oklch(42.8% 0.052 136.2)
-
Step 900
900
#384731
oklch(37.8% 0.041 135.9)
-
Step 950
950
#21291D
oklch(26.9% 0.024 135.3)
#647F57 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) | #827954 | 0.044 |
| Deuteranopia (no green cones) | #7E7759 | 0.043 |
| Tritanopia (no blue cones) | #647C75 | 0.048 |
| Achromatopsia (no color) | #777777 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647F57
#647F57
oklch(56.4% 0.067 135.8)
- #856A91
#856A91
oklch(56.5% 0.067 315.3)
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 #647F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.022
- Military Green #667C3E ΔE 0.030
- Swamp #698339 ΔE 0.042
- Slate Green #658D6D ΔE 0.044
- Muddy Green #657432 ΔE 0.047
- Khaki Green #728639 ΔE 0.049
- Drab #828344 ΔE 0.049
- Grey Brown #7F7053 ΔE 0.055
Use #647F57 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.