#677798
Closest named color: Grey Blue (#647D8E). oklch(56.9% 0.055 264.5), rgb(103, 119, 152).
Aa
Black text reads best on this color (4.66:1).
About this color
#677798 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.055 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.027 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.66:1 |
| White text | 4.49:1 |
Values
| HEX | #677798 |
| RGB | rgb(103, 119, 152) |
| HSL | hsl(220, 19%, 50%) |
| OKLCH | oklch(56.9% 0.055 264.5) |
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 #677798 | 4.49:1 | AA large text | Lc -76.7 | Fine for body text |
| Black text on #677798 | 4.66:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #677798 text on white | 4.49:1 | AA large text | Lc 71.2 | Content text, not long reading |
| #677798 text on black | 4.66:1 | AA | Lc -30.5 | 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
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
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)
#677798
oklch(56.9% 0.055 264.5)
-
Step 700
700
#52617E
oklch(49.2% 0.05 263.3)
-
Step 800
800
#434F67
oklch(42.7% 0.043 264)
-
Step 900
900
#394253
oklch(37.8% 0.032 263)
-
Step 950
950
#212631
oklch(26.9% 0.022 265.8)
#677798 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) | #6C799A | 0.010 |
| Deuteranopia (no green cones) | #677597 | 0.006 |
| Tritanopia (no blue cones) | #597E82 | 0.050 |
| Achromatopsia (no color) | #777777 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677798
#677798
oklch(56.9% 0.055 264.5)
- #867552
#867552
oklch(56.9% 0.054 84.8)
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 #677798, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.027
- Stormy Blue #507B9C ΔE 0.028
- Slate Gray #708090 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.038
- Battleship Grey #6B7C85 ΔE 0.038
- Dull Blue #49759C ΔE 0.038
- Cerulean #457B9D ΔE 0.039
- Battleship Gray #6C757D ΔE 0.041
Use #677798 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.