#686FB5
Closest named color: French Blue (#436BAD). oklch(56.7% 0.108 278), rgb(104, 111, 181).
Aa
White text reads best on this color (4.63:1).
About this color
#686FB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.108 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.051 away. White text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.52:1 |
| White text | 4.63:1 |
Values
| HEX | #686FB5 |
| RGB | rgb(104, 111, 181) |
| HSL | hsl(235, 34%, 56%) |
| OKLCH | oklch(56.7% 0.108 278) |
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 #686FB5 | 4.63:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #686FB5 | 4.52:1 | AA | Lc 32.0 | Non-text elements, placeholder text |
| #686FB5 text on white | 4.63:1 | AA | Lc 72.1 | Content text, not long reading |
| #686FB5 text on black | 4.52:1 | AA | Lc -29.6 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B9BEE0
oklch(80.9% 0.048 278.7)
-
Step 400
400
#959CD1
oklch(70.7% 0.078 278.4)
-
Step 500
500
#7B83C5
oklch(63% 0.1 277.8)
-
Step 600
600 (this color)
#686FB5
oklch(56.7% 0.108 278)
-
Step 700
700
#545A99
oklch(49.2% 0.1 277.9)
-
Step 800
800
#454A7C
oklch(42.8% 0.083 278)
-
Step 900
900
#3A3E64
oklch(37.8% 0.065 278.2)
-
Step 950
950
#22243A
oklch(26.9% 0.041 279.3)
#686FB5 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) | #5678B8 | 0.031 |
| Deuteranopia (no green cones) | #5172B3 | 0.030 |
| Tritanopia (no blue cones) | #4F7D89 | 0.095 |
| Achromatopsia (no color) | #757575 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #686FB5
#686FB5
oklch(56.7% 0.108 278)
- #87761A
#87761A
oklch(56.5% 0.108 98)
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 #686FB5, closest first.
No curated palette has a color within ΔE 0.04 of #686FB5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.051
- Windows Blue #3778BF ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.058
- Dark Lavender #856798 ΔE 0.061
- Dull Blue #49759C ΔE 0.061
- Steel Blue #4682B4 ΔE 0.062
- Cool Blue #4984B8 ΔE 0.063
- Off Blue #5684AE ΔE 0.064
Use #686FB5 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.