#6B758E
Closest named color: Grey Blue (#647D8E). oklch(56.3% 0.041 268), rgb(107, 117, 142).
Aa
White text reads best on this color (4.60:1).
About this color
#6B758E is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.041 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.024 away. White text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #6B758E |
| RGB | rgb(107, 117, 142) |
| HSL | hsl(223, 14%, 49%) |
| OKLCH | oklch(56.3% 0.041 268) |
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 #6B758E | 4.60:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #6B758E | 4.56:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #6B758E text on white | 4.60:1 | AA | Lc 72.0 | Content text, not long reading |
| #6B758E text on black | 4.56:1 | AA | Lc -29.7 | Dividers and decoration only |
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
#D6D9E0
oklch(88.5% 0.01 267.4)
-
Step 300
300
#BBC0CD
oklch(80.8% 0.019 269)
-
Step 400
400
#99A0B3
oklch(70.6% 0.029 269.5)
-
Step 500
500
#8089A1
oklch(63.1% 0.038 269.1)
-
Step 600
600 (this color)
#6B758E
oklch(56.3% 0.041 268)
-
Step 700
700
#576077
oklch(49% 0.039 268.2)
-
Step 800
800
#474F61
oklch(42.8% 0.032 266.2)
-
Step 900
900
#3C414F
oklch(37.6% 0.025 269.7)
-
Step 950
950
#23262E
oklch(26.9% 0.016 269.1)
#6B758E 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) | #6D778F | 0.007 |
| Deuteranopia (no green cones) | #6A748D | 0.003 |
| Tritanopia (no blue cones) | #627A7D | 0.037 |
| Achromatopsia (no color) | #757575 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B758E
#6B758E
oklch(56.3% 0.041 268)
- #7F745A
#7F745A
oklch(56.2% 0.04 87.8)
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 #6B758E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.024
- Battleship Gray #6C757D ΔE 0.027
- Battleship Grey #6B7C85 ΔE 0.029
- Slate Gray #708090 ΔE 0.033
- Metallic Blue #4F738E ΔE 0.038
- Stormy Blue #507B9C ΔE 0.038
- Grey Purple #826D8C ΔE 0.039
- Steel Grey #6F828A ΔE 0.042
Use #6B758E 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.