#677598
Closest named color: Stormy Blue (#507B9C). oklch(56.4% 0.057 267.6), rgb(103, 117, 152).
Aa
White text reads best on this color (4.59:1).
About this color
#677598 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.057 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.030 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #677598 |
| RGB | rgb(103, 117, 152) |
| HSL | hsl(223, 19%, 50%) |
| OKLCH | oklch(56.4% 0.057 267.6) |
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 #677598 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #677598 | 4.57:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #677598 text on white | 4.59:1 | AA | Lc 71.9 | Content text, not long reading |
| #677598 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
#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
#B9C0D2
oklch(80.8% 0.026 268.8)
-
Step 400
400
#95A0BB
oklch(70.6% 0.041 267.8)
-
Step 500
500
#7B89AA
oklch(63.1% 0.052 266.9)
-
Step 600
600 (this color)
#677598
oklch(56.4% 0.057 267.6)
-
Step 700
700
#53607F
oklch(49.1% 0.053 266.8)
-
Step 800
800
#444E68
oklch(42.6% 0.045 268.1)
-
Step 900
900
#3A4154
oklch(37.7% 0.034 269)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#677598 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) | #6A789A | 0.010 |
| Deuteranopia (no green cones) | #657397 | 0.007 |
| Tritanopia (no blue cones) | #597C81 | 0.051 |
| Achromatopsia (no color) | #757575 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677598
#677598
oklch(56.4% 0.057 267.6)
- #84744E
#84744E
oklch(56.4% 0.057 87.7)
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 #677598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.030
- Grey Blue #647D8E ΔE 0.032
- Metallic Blue #4F738E ΔE 0.036
- Dull Blue #49759C ΔE 0.037
- Cerulean #457B9D ΔE 0.040
- Slate Gray #708090 ΔE 0.041
- Battleship Grey #6B7C85 ΔE 0.042
- Battleship Gray #6C757D ΔE 0.043
Use #677598 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.