#677A97
Closest named color: Grey Blue (#647D8E). oklch(57.5% 0.05 258.7), rgb(103, 122, 151).
Aa
Black text reads best on this color (4.80:1).
About this color
#677A97 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.050 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.019 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #677A97 |
| RGB | rgb(103, 122, 151) |
| HSL | hsl(216, 19%, 50%) |
| OKLCH | oklch(57.5% 0.05 258.7) |
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 #677A97 | 4.36:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #677A97 | 4.80:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #677A97 text on white | 4.36:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #677A97 text on black | 4.80:1 | AA | Lc -31.4 | 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
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B8C1D0
oklch(80.9% 0.023 260.7)
-
Step 400
400
#93A2B8
oklch(70.8% 0.036 257.9)
-
Step 500
500
#798BA6
oklch(63.2% 0.046 258.4)
-
Step 600
600 (this color)
#677A97
oklch(57.5% 0.05 258.7)
-
Step 700
700
#51627C
oklch(49.2% 0.047 258.8)
-
Step 800
800
#425064
oklch(42.7% 0.038 257.3)
-
Step 900
900
#384252
oklch(37.7% 0.031 259.7)
-
Step 950
950
#212730
oklch(27.1% 0.019 258.4)
#677A97 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) | #707B98 | 0.013 |
| Deuteranopia (no green cones) | #6B7796 | 0.009 |
| Tritanopia (no blue cones) | #598084 | 0.044 |
| Achromatopsia (no color) | #797979 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677A97
#677A97
oklch(57.5% 0.05 258.7)
- #897657
#897657
oklch(57.6% 0.05 79.7)
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 #677A97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.019
- Slate Gray #708090 ΔE 0.027
- Stormy Blue #507B9C ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.031
- Lavender Gray #7E7F9A ΔE 0.037
- Steel Grey #6F828A ΔE 0.037
- Steel #738595 ΔE 0.039
- Battleship Gray #6C757D ΔE 0.039
Use #677A97 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.