#677899
Closest named color: Grey Blue (#647D8E). oklch(57.2% 0.055 263.5), rgb(103, 120, 153).
Aa
Black text reads best on this color (4.72:1).
About this color
#677899 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.055 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.026 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #677899 |
| RGB | rgb(103, 120, 153) |
| HSL | hsl(220, 20%, 50%) |
| OKLCH | oklch(57.2% 0.055 263.5) |
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 #677899 | 4.44:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #677899 | 4.72:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #677899 text on white | 4.44:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #677899 text on black | 4.72:1 | AA | Lc -30.8 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E3
oklch(88.4% 0.015 264.5)
-
Step 300
300
#B8C1D1
oklch(80.9% 0.025 262.1)
-
Step 400
400
#94A1BA
oklch(70.7% 0.039 263.5)
-
Step 500
500
#7A8AA9
oklch(63.2% 0.05 263.5)
-
Step 600
600 (this color)
#677899
oklch(57.2% 0.055 263.5)
-
Step 700
700
#52617E
oklch(49.2% 0.05 263.3)
-
Step 800
800
#434F67
oklch(42.7% 0.043 264)
-
Step 900
900
#384254
oklch(37.8% 0.034 262.1)
-
Step 950
950
#212731
oklch(27.1% 0.021 260.6)
#677899 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) | #6D7A9B | 0.011 |
| Deuteranopia (no green cones) | #687598 | 0.008 |
| Tritanopia (no blue cones) | #597F83 | 0.050 |
| Achromatopsia (no color) | #787878 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677899
#677899
oklch(57.2% 0.055 263.5)
- #887552
#887552
oklch(57.1% 0.055 82.4)
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 #677899, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.026
- Stormy Blue #507B9C ΔE 0.028
- Slate Gray #708090 ΔE 0.034
- Battleship Grey #6B7C85 ΔE 0.037
- Cerulean #457B9D ΔE 0.039
- Dull Blue #49759C ΔE 0.039
- Metallic Blue #4F738E ΔE 0.039
- Lavender Gray #7E7F9A ΔE 0.040
Use #677899 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.