#647E6E
Closest named color: Battleship Grey (#6B7C85). oklch(56.8% 0.039 157.9), rgb(100, 126, 110).
Aa
Black text reads best on this color (4.75:1).
About this color
#647E6E is a medium-dark, muted green. In OKLCH its lightness is 57%, its chroma 0.039 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.040 away. Black text reads best on it, at 4.75:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.039) |
| Temperature | in between |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #647E6E |
| RGB | rgb(100, 126, 110) |
| HSL | hsl(143, 12%, 44%) |
| OKLCH | oklch(56.8% 0.039 157.9) |
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 #647E6E | 4.41:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #647E6E | 4.75:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #647E6E text on white | 4.41:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #647E6E text on black | 4.75:1 | AA | Lc -31.0 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D4DBD7
oklch(88.5% 0.009 161.3)
-
Step 300
300
#B8C4BC
oklch(80.9% 0.017 156.8)
-
Step 400
400
#93A69A
oklch(70.7% 0.027 157.9)
-
Step 500
500
#789081
oklch(63% 0.035 157.8)
-
Step 600
600 (this color)
#647E6E
oklch(56.8% 0.039 157.9)
-
Step 700
700
#506759
oklch(49.1% 0.035 158.1)
-
Step 800
800
#425449
oklch(42.7% 0.029 158.1)
-
Step 900
900
#37463D
oklch(37.8% 0.025 158.6)
-
Step 950
950
#212924
oklch(27.1% 0.015 157.9)
#647E6E 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) | #7E7A6D | 0.037 |
| Deuteranopia (no green cones) | #79776F | 0.035 |
| Tritanopia (no blue cones) | #607E79 | 0.017 |
| Achromatopsia (no color) | #787878 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647E6E
#647E6E
oklch(56.8% 0.039 157.9)
- #876E7F
#876E7F
oklch(56.8% 0.04 338)
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 #647E6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.040
- Battleship Gray #6C757D ΔE 0.043
- Medium Grey #7D7F7C ΔE 0.043
- Steel Grey #6F828A ΔE 0.046
- Slate Green #658D6D ΔE 0.046
- Dark Sage #598556 ΔE 0.049
- Gray #808080 ΔE 0.050
- Grey Blue #647D8E ΔE 0.051
Use #647E6E 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.