#6F778E
Closest named color: Grey Blue (#647D8E). oklch(57.1% 0.037 270.1), rgb(111, 119, 142).
Aa
Black text reads best on this color (4.70:1).
About this color
#6F778E is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.037 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.022 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #6F778E |
| RGB | rgb(111, 119, 142) |
| HSL | hsl(225, 12%, 50%) |
| OKLCH | oklch(57.1% 0.037 270.1) |
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 #6F778E | 4.46:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #6F778E | 4.70:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #6F778E text on white | 4.46:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #6F778E text on black | 4.70:1 | AA | Lc -30.7 | 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
#BCC0CC
oklch(80.8% 0.017 271.2)
-
Step 400
400
#9AA0B2
oklch(70.7% 0.027 271)
-
Step 500
500
#81899F
oklch(63.1% 0.034 269.6)
-
Step 600
600 (this color)
#6F778E
oklch(57.1% 0.037 270.1)
-
Step 700
700
#596075
oklch(49.1% 0.035 270.6)
-
Step 800
800
#494E5F
oklch(42.6% 0.029 272.3)
-
Step 900
900
#3D414E
oklch(37.7% 0.023 271.8)
-
Step 950
950
#24262D
oklch(27% 0.013 272.9)
#6F778E 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) | #70798F | 0.006 |
| Deuteranopia (no green cones) | #6E768D | 0.003 |
| Tritanopia (no blue cones) | #687B7F | 0.032 |
| Achromatopsia (no color) | #777777 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F778E
#6F778E
oklch(57.1% 0.037 270.1)
- #80775F
#80775F
oklch(57.1% 0.037 89.9)
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 #6F778E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.022
- Battleship Grey #6B7C85 ΔE 0.024
- Slate Gray #708090 ΔE 0.026
- Battleship Gray #6C757D ΔE 0.027
- Steel Grey #6F828A ΔE 0.035
- Lavender Gray #7E7F9A ΔE 0.036
- Grey Purple #826D8C ΔE 0.038
- Purple Grey #866F85 ΔE 0.039
Use #6F778E 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.