#677789
Closest named color: Grey Blue (#647D8E). oklch(56.3% 0.034 251.5), rgb(103, 119, 137).
Aa
White text reads best on this color (4.58:1).
About this color
#677789 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.034 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.017 away. White text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.57:1 |
| White text | 4.58:1 |
Values
| HEX | #677789 |
| RGB | rgb(103, 119, 137) |
| HSL | hsl(212, 14%, 47%) |
| OKLCH | oklch(56.3% 0.034 251.5) |
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 #677789 | 4.58:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #677789 | 4.57:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #677789 text on white | 4.58:1 | AA | Lc 71.9 | Content text, not long reading |
| #677789 text on black | 4.57:1 | AA | Lc -29.8 | 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
#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
#BAC1CA
oklch(80.8% 0.015 254.6)
-
Step 400
400
#96A2B0
oklch(70.7% 0.025 252.2)
-
Step 500
500
#7C8B9C
oklch(63.1% 0.031 251.6)
-
Step 600
600 (this color)
#677789
oklch(56.3% 0.034 251.5)
-
Step 700
700
#546272
oklch(49% 0.031 251.9)
-
Step 800
800
#45505D
oklch(42.7% 0.026 252.7)
-
Step 900
900
#3A434C
oklch(37.8% 0.019 248.3)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#677789 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) | #71778A | 0.014 |
| Deuteranopia (no green cones) | #6D7489 | 0.011 |
| Tritanopia (no blue cones) | #5E7B7D | 0.028 |
| Achromatopsia (no color) | #757575 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677789
#677789
oklch(56.3% 0.034 251.5)
- #827260
#827260
oklch(56.2% 0.033 70.4)
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 #677789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.017
- Battleship Gray #6C757D ΔE 0.018
- Battleship Grey #6B7C85 ΔE 0.019
- Slate Gray #708090 ΔE 0.030
- Steel Grey #6F828A ΔE 0.035
- Metallic Blue #4F738E ΔE 0.035
- Stormy Blue #507B9C ΔE 0.037
- Steel #738595 ΔE 0.045
Use #677789 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.