#6A778C
Closest named color: Grey Blue (#647D8E). oklch(56.6% 0.036 260), rgb(106, 119, 140).
Aa
Black text reads best on this color (4.63:1).
About this color
#6A778C is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.036 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.018 away. Black text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.63:1 |
| White text | 4.53:1 |
Values
| HEX | #6A778C |
| RGB | rgb(106, 119, 140) |
| HSL | hsl(217, 14%, 48%) |
| OKLCH | oklch(56.6% 0.036 260) |
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 #6A778C | 4.53:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #6A778C | 4.63:1 | AA | Lc 32.6 | Non-text elements, placeholder text |
| #6A778C text on white | 4.53:1 | AA | Lc 71.5 | Content text, not long reading |
| #6A778C text on black | 4.63:1 | AA | Lc -30.2 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9DF
oklch(88.5% 0.009 264.5)
-
Step 300
300
#BBC1CB
oklch(80.9% 0.016 260.7)
-
Step 400
400
#97A1B1
oklch(70.6% 0.026 259.8)
-
Step 500
500
#7E8A9E
oklch(63.1% 0.033 260.7)
-
Step 600
600 (this color)
#6A778C
oklch(56.6% 0.036 260)
-
Step 700
700
#566174
oklch(49% 0.033 261.4)
-
Step 800
800
#464F5F
oklch(42.6% 0.029 261.9)
-
Step 900
900
#3B424D
oklch(37.7% 0.021 259.4)
-
Step 950
950
#23272D
oklch(27.1% 0.013 258.4)
#6A778C 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) | #70788D | 0.009 |
| Deuteranopia (no green cones) | #6D758C | 0.007 |
| Tritanopia (no blue cones) | #617B7E | 0.031 |
| Achromatopsia (no color) | #767676 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A778C
#6A778C
oklch(56.6% 0.036 260)
- #82745E
#82745E
oklch(56.6% 0.037 79)
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 #6A778C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.018
- Battleship Grey #6B7C85 ΔE 0.021
- Battleship Gray #6C757D ΔE 0.022
- Slate Gray #708090 ΔE 0.028
- Steel Grey #6F828A ΔE 0.035
- Stormy Blue #507B9C ΔE 0.037
- Metallic Blue #4F738E ΔE 0.038
- Lavender Gray #7E7F9A ΔE 0.042
Use #6A778C 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.