#686BD9
Closest named color: Dark Periwinkle (#665FD1). oklch(58.1% 0.165 278.8), rgb(104, 107, 217).
Aa
Black text reads best on this color (4.69:1).
About this color
#686BD9 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.165 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.031 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #686BD9 |
| RGB | rgb(104, 107, 217) |
| HSL | hsl(238, 60%, 63%) |
| OKLCH | oklch(58.1% 0.165 278.8) |
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 #686BD9 | 4.47:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #686BD9 | 4.69:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #686BD9 text on white | 4.47:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #686BD9 text on black | 4.69:1 | AA | Lc -30.9 | Non-text elements, placeholder text |
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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F5
oklch(88.5% 0.041 279.5)
-
Step 300
300
#B6BCF1
oklch(80.9% 0.075 279.5)
-
Step 400
400
#9198E9
oklch(70.7% 0.118 279.1)
-
Step 500
500
#777DE3
oklch(63.2% 0.151 278.6)
-
Step 600
600 (this color)
#686BD9
oklch(58.1% 0.165 278.8)
-
Step 700
700
#5152B5
oklch(49.2% 0.153 278.7)
-
Step 800
800
#424392
oklch(42.6% 0.127 279)
-
Step 900
900
#373A75
oklch(37.8% 0.099 278.3)
-
Step 950
950
#202244
oklch(26.9% 0.063 278.8)
#686BD9 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) | #337CDD | 0.064 |
| Deuteranopia (no green cones) | #2673D7 | 0.066 |
| Tritanopia (no blue cones) | #378398 | 0.143 |
| Achromatopsia (no color) | #777777 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #686BD9
#686BD9
oklch(58.1% 0.165 278.8)
- #8D7B00
#8D7B00
oklch(58.2% 0.121 99)
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 #686BD9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.031
- Light Indigo #6D5ACF ΔE 0.042
- Slate Blue #6A5ACD ΔE 0.043
- Medium Slate Blue #7B68EE ΔE 0.043
- Royal Blue #4169E1 ΔE 0.049
- Cornflower #6A79F7 ΔE 0.054
- Iris #6258C4 ΔE 0.055
- Neon Blue #4361EE ΔE 0.064
Use #686BD9 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.