#6C7C8F
Closest named color: Grey Blue (#647D8E). oklch(58% 0.035 252.8), rgb(108, 124, 143).
Aa
Black text reads best on this color (4.91:1).
About this color
#6C7C8F is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.035 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.011 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #6C7C8F |
| RGB | rgb(108, 124, 143) |
| HSL | hsl(213, 14%, 49%) |
| OKLCH | oklch(58% 0.035 252.8) |
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 #6C7C8F | 4.27:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #6C7C8F | 4.91:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #6C7C8F text on white | 4.27:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #6C7C8F text on black | 4.91:1 | AA | Lc -32.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5DADF
oklch(88.6% 0.009 247.9)
-
Step 300
300
#BAC1CB
oklch(80.8% 0.016 257.2)
-
Step 400
400
#96A2B0
oklch(70.7% 0.025 252.2)
-
Step 500
500
#7C8B9D
oklch(63.1% 0.032 253.1)
-
Step 600
600 (this color)
#6C7C8F
oklch(58% 0.035 252.8)
-
Step 700
700
#546273
oklch(49.1% 0.032 253.4)
-
Step 800
800
#45505E
oklch(42.7% 0.027 254.6)
-
Step 900
900
#3A424D
oklch(37.6% 0.022 256.4)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#6C7C8F 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) | #757C90 | 0.013 |
| Deuteranopia (no green cones) | #71798F | 0.011 |
| Tritanopia (no blue cones) | #638082 | 0.030 |
| Achromatopsia (no color) | #7A7A7A | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C7C8F
#6C7C8F
oklch(58% 0.035 252.8)
- #877764
#877764
oklch(57.9% 0.034 71.8)
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 #6C7C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.011
- Slate Gray #708090 ΔE 0.013
- Battleship Grey #6B7C85 ΔE 0.016
- Steel Grey #6F828A ΔE 0.022
- Steel #738595 ΔE 0.028
- Battleship Gray #6C757D ΔE 0.029
- Lavender Gray #7E7F9A ΔE 0.033
- Light Slate Gray #778899 ΔE 0.039
Use #6C7C8F 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.