#647666
Closest named color: Battleship Gray (#6C757D). oklch(54.6% 0.033 148.2), rgb(100, 118, 102).
Aa
White text reads best on this color (4.85:1).
About this color
#647666 is a medium-dark, muted green. In OKLCH its lightness is 55%, its chroma 0.033 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.040 away. White text reads best on it, at 4.85:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #647666 |
| RGB | rgb(100, 118, 102) |
| HSL | hsl(127, 8%, 43%) |
| OKLCH | oklch(54.6% 0.033 148.2) |
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 #647666 | 4.85:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #647666 | 4.32:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #647666 text on white | 4.85:1 | AA | Lc 73.7 | Content text, not long reading |
| #647666 text on black | 4.32:1 | AA large text | Lc -28.0 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EBE8
oklch(93.7% 0.005 145.5)
-
Step 200
200
#D6DBD6
oklch(88.6% 0.009 145.5)
-
Step 300
300
#BBC3BB
oklch(80.9% 0.014 145.4)
-
Step 400
400
#97A599
oklch(70.7% 0.023 149.6)
-
Step 500
500
#7E8F7F
oklch(63.2% 0.031 146.8)
-
Step 600
600 (this color)
#647666
oklch(54.6% 0.033 148.2)
-
Step 700
700
#556657
oklch(49.1% 0.031 148.4)
-
Step 800
800
#465347
oklch(42.7% 0.026 147.2)
-
Step 900
900
#3B453C
oklch(37.8% 0.02 148)
-
Step 950
950
#222823
oklch(26.9% 0.013 150.2)
#647666 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) | #777365 | 0.028 |
| Deuteranopia (no green cones) | #737167 | 0.026 |
| Tritanopia (no blue cones) | #627571 | 0.018 |
| Achromatopsia (no color) | #717171 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647666
#647666
oklch(54.6% 0.033 148.2)
- #7B6A7A
#7B6A7A
oklch(54.6% 0.032 327.9)
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 #647666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.040
- Dim Gray #696969 ΔE 0.041
- Grey Brown #7F7053 ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.048
- Dark Taupe #7F684E ΔE 0.054
- Medium Grey #7D7F7C ΔE 0.055
- Dull Brown #876E4B ΔE 0.059
- Grey Blue #647D8E ΔE 0.059
Use #647666 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.