#686CAB
Closest named color: French Blue (#436BAD). oklch(55.5% 0.097 279.9), rgb(104, 108, 171).
Aa
White text reads best on this color (4.85:1).
About this color
#686CAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.097 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.047 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #686CAB |
| RGB | rgb(104, 108, 171) |
| HSL | hsl(236, 29%, 54%) |
| OKLCH | oklch(55.5% 0.097 279.9) |
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 #686CAB | 4.85:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #686CAB | 4.32:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #686CAB text on white | 4.85:1 | AA | Lc 73.6 | Content text, not long reading |
| #686CAB text on black | 4.32:1 | AA large text | Lc -28.1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABEDD
oklch(80.8% 0.044 279.6)
-
Step 400
400
#979CCC
oklch(70.6% 0.07 279.8)
-
Step 500
500
#7F83BF
oklch(63.1% 0.09 280.5)
-
Step 600
600 (this color)
#686CAB
oklch(55.5% 0.097 279.9)
-
Step 700
700
#575A93
oklch(49.1% 0.091 280.2)
-
Step 800
800
#474A77
oklch(42.7% 0.074 279.8)
-
Step 900
900
#3B3E60
oklch(37.7% 0.058 279.3)
-
Step 950
950
#232438
oklch(26.9% 0.037 281.4)
#686CAB 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) | #5774AE | 0.029 |
| Deuteranopia (no green cones) | #536FAA | 0.028 |
| Tritanopia (no blue cones) | #547883 | 0.086 |
| Achromatopsia (no color) | #717171 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #686CAB
#686CAB
oklch(55.5% 0.097 279.9)
- #817427
#817427
oklch(55.6% 0.097 99.6)
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 #686CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.047
- Dark Lavender #856798 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.054
- Dull Blue #49759C ΔE 0.054
- Muted Blue #3B719F ΔE 0.060
- Stormy Blue #507B9C ΔE 0.060
- Windows Blue #3778BF ΔE 0.062
- Grey Purple #826D8C ΔE 0.063
Use #686CAB 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.