#6F778C
Closest named color: Grey Blue (#647D8E). oklch(57% 0.034 268.8), rgb(111, 119, 140).
Aa
Black text reads best on this color (4.69:1).
About this color
#6F778C is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.034 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.021 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #6F778C |
| RGB | rgb(111, 119, 140) |
| HSL | hsl(223, 12%, 49%) |
| OKLCH | oklch(57% 0.034 268.8) |
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 #6F778C | 4.47:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #6F778C | 4.69:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #6F778C text on white | 4.47:1 | AA large text | Lc 71.1 | Content text, not long reading |
| #6F778C text on black | 4.69:1 | AA | Lc -30.6 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D7D9DF
oklch(88.6% 0.008 271.3)
-
Step 300
300
#BCC0CB
oklch(80.8% 0.016 269.9)
-
Step 400
400
#9AA0B0
oklch(70.6% 0.024 269.3)
-
Step 500
500
#82899D
oklch(63.1% 0.031 270.2)
-
Step 600
600 (this color)
#6F778C
oklch(57% 0.034 268.8)
-
Step 700
700
#596073
oklch(49% 0.032 269.3)
-
Step 800
800
#494F5E
oklch(42.8% 0.026 268.1)
-
Step 900
900
#3D414D
oklch(37.6% 0.021 270.8)
-
Step 950
950
#24262D
oklch(27% 0.013 272.9)
#6F778C 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) | #71788D | 0.004 |
| Deuteranopia (no green cones) | #6E768B | 0.003 |
| Tritanopia (no blue cones) | #687B7E | 0.030 |
| Achromatopsia (no color) | #777777 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F778C
#6F778C
oklch(57% 0.034 268.8)
- #7F7761
#7F7761
oklch(57% 0.034 90.4)
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 #6F778C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.021
- Battleship Grey #6B7C85 ΔE 0.022
- Battleship Gray #6C757D ΔE 0.024
- Slate Gray #708090 ΔE 0.025
- Steel Grey #6F828A ΔE 0.034
- Lavender Gray #7E7F9A ΔE 0.037
- Grey Purple #826D8C ΔE 0.038
- Purple Grey #866F85 ΔE 0.039
Use #6F778C 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.