#647E84
Closest named color: Battleship Grey (#6B7C85). oklch(57.5% 0.031 213.3), rgb(100, 126, 132).
Aa
Black text reads best on this color (4.85:1).
About this color
#647E84 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 57%, its chroma 0.031 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.011 away. Black text reads best on it, at 4.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #647E84 |
| RGB | rgb(100, 126, 132) |
| HSL | hsl(191, 14%, 45%) |
| OKLCH | oklch(57.5% 0.031 213.3) |
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 #647E84 | 4.32:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #647E84 | 4.85:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #647E84 text on white | 4.32:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #647E84 text on black | 4.85:1 | AA | Lc -31.8 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADC
oklch(88.4% 0.007 219.6)
-
Step 300
300
#B7C3C6
oklch(80.9% 0.014 214.4)
-
Step 400
400
#91A5A9
oklch(70.8% 0.023 211.1)
-
Step 500
500
#768E94
oklch(63% 0.029 214.6)
-
Step 600
600 (this color)
#647E84
oklch(57.5% 0.031 213.3)
-
Step 700
700
#4E656B
oklch(49% 0.029 215.4)
-
Step 800
800
#405357
oklch(42.8% 0.024 211.9)
-
Step 900
900
#364448
oklch(37.6% 0.019 217)
-
Step 950
950
#20282A
oklch(27% 0.012 214.5)
#647E84 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) | #797C84 | 0.029 |
| Deuteranopia (no green cones) | #747884 | 0.027 |
| Tritanopia (no blue cones) | #5A8180 | 0.017 |
| Achromatopsia (no color) | #7A7A7A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647E84
#647E84
oklch(57.5% 0.031 213.3)
- #8A726D
#8A726D
oklch(57.3% 0.031 31.8)
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 #647E84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.011
- Grey Blue #647D8E ΔE 0.017
- Steel Grey #6F828A ΔE 0.021
- Slate Gray #708090 ΔE 0.026
- Battleship Gray #6C757D ΔE 0.026
- Medium Grey #7D7F7C ΔE 0.036
- Steel #738595 ΔE 0.037
- Gray #808080 ΔE 0.040
Use #647E84 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.