#6C779D
Closest named color: Grey Blue (#647D8E). oklch(57.5% 0.06 271.9), rgb(108, 119, 157).
Aa
Black text reads best on this color (4.76:1).
About this color
#6C779D is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.060 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.035 away. Black text reads best on it, at 4.76:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.76:1 |
| White text | 4.40:1 |
Values
| HEX | #6C779D |
| RGB | rgb(108, 119, 157) |
| HSL | hsl(227, 20%, 52%) |
| OKLCH | oklch(57.5% 0.06 271.9) |
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 #6C779D | 4.40:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #6C779D | 4.76:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #6C779D text on white | 4.40:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #6C779D text on black | 4.76:1 | AA | Lc -31.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#BAC0D3
oklch(80.9% 0.028 271.8)
-
Step 400
400
#97A0BC
oklch(70.8% 0.042 271.2)
-
Step 500
500
#7D88AC
oklch(63.1% 0.056 271.5)
-
Step 600
600 (this color)
#6C779D
oklch(57.5% 0.06 271.9)
-
Step 700
700
#555F81
oklch(49.1% 0.056 271.6)
-
Step 800
800
#464E69
oklch(42.8% 0.046 271.6)
-
Step 900
900
#3B4155
oklch(37.8% 0.035 271.6)
-
Step 950
950
#222632
oklch(27% 0.023 270.4)
#6C779D 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) | #6B7A9F | 0.008 |
| Deuteranopia (no green cones) | #67769C | 0.008 |
| Tritanopia (no blue cones) | #5F7E84 | 0.053 |
| Achromatopsia (no color) | #787878 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C779D
#6C779D
oklch(57.5% 0.06 271.9)
- #86784F
#86784F
oklch(57.5% 0.06 91.4)
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 #6C779D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
- Lavender Gray #7E7F9A ΔE 0.037
- Slate Gray #708090 ΔE 0.038
- Grey Purple #826D8C ΔE 0.043
- Off Blue #5684AE ΔE 0.043
- Battleship Grey #6B7C85 ΔE 0.045
- Dull Blue #49759C ΔE 0.045
Use #6C779D 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.