#687597
Closest named color: Grey Blue (#647D8E). oklch(56.5% 0.055 268.3), rgb(104, 117, 151).
Aa
White text reads best on this color (4.58:1).
About this color
#687597 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.055 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.031 away. White text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.58:1 |
| White text | 4.58:1 |
Values
| HEX | #687597 |
| RGB | rgb(104, 117, 151) |
| HSL | hsl(223, 18%, 50%) |
| OKLCH | oklch(56.5% 0.055 268.3) |
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 #687597 | 4.58:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #687597 | 4.58:1 | AA | Lc 32.2 | Non-text elements, placeholder text |
| #687597 text on white | 4.58:1 | AA | Lc 71.8 | Content text, not long reading |
| #687597 text on black | 4.58:1 | 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
#BAC0D1
oklch(80.8% 0.025 270.3)
-
Step 400
400
#96A0BA
oklch(70.7% 0.04 268.7)
-
Step 500
500
#7C89A9
oklch(63.1% 0.051 267.6)
-
Step 600
600 (this color)
#687597
oklch(56.5% 0.055 268.3)
-
Step 700
700
#54607E
oklch(49.1% 0.051 267.6)
-
Step 800
800
#454E67
oklch(42.6% 0.043 269.2)
-
Step 900
900
#3A4154
oklch(37.7% 0.034 269)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#687597 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) | #6A7899 | 0.009 |
| Deuteranopia (no green cones) | #667496 | 0.004 |
| Tritanopia (no blue cones) | #5B7C81 | 0.049 |
| Achromatopsia (no color) | #757575 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #687597
#687597
oklch(56.5% 0.055 268.3)
- #837450
#837450
oklch(56.4% 0.055 87.9)
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 #687597, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.031
- Stormy Blue #507B9C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.037
- Dull Blue #49759C ΔE 0.038
- Slate Gray #708090 ΔE 0.040
- Battleship Grey #6B7C85 ΔE 0.040
- Battleship Gray #6C757D ΔE 0.041
- Cerulean #457B9D ΔE 0.042
Use #687597 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.