#677397
Closest named color: Stormy Blue (#507B9C). oklch(56% 0.058 270.2), rgb(103, 115, 151).
Aa
White text reads best on this color (4.69:1).
About this color
#677397 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.058 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.033 away. White text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #677397 |
| RGB | rgb(103, 115, 151) |
| HSL | hsl(225, 19%, 50%) |
| OKLCH | oklch(56% 0.058 270.2) |
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 #677397 | 4.69:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #677397 | 4.47:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #677397 text on white | 4.69:1 | AA | Lc 72.6 | Content text, not long reading |
| #677397 text on black | 4.47:1 | AA large text | Lc -29.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#BAC0D2
oklch(80.9% 0.026 271.1)
-
Step 400
400
#96A0BB
oklch(70.7% 0.041 269.3)
-
Step 500
500
#7D88AA
oklch(63% 0.053 270.8)
-
Step 600
600 (this color)
#677397
oklch(56% 0.058 270.2)
-
Step 700
700
#555F80
oklch(49% 0.055 271.3)
-
Step 800
800
#454E68
oklch(42.7% 0.045 269.6)
-
Step 900
900
#3A4154
oklch(37.7% 0.034 269)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#677397 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) | #687699 | 0.009 |
| Deuteranopia (no green cones) | #647296 | 0.005 |
| Tritanopia (no blue cones) | #5A7A7F | 0.052 |
| Achromatopsia (no color) | #747474 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677397
#677397
oklch(56% 0.058 270.2)
- #81734C
#81734C
oklch(55.9% 0.058 90.5)
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 #677397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.033
- Metallic Blue #4F738E ΔE 0.035
- Grey Blue #647D8E ΔE 0.036
- Dull Blue #49759C ΔE 0.036
- Cerulean #457B9D ΔE 0.042
- Grey Purple #826D8C ΔE 0.043
- Battleship Gray #6C757D ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.045
Use #677397 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.