#686DBB
Closest named color: Dark Periwinkle (#665FD1). oklch(56.6% 0.12 279.1), rgb(104, 109, 187).
Aa
White text reads best on this color (4.67:1).
About this color
#686DBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.120 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.053 away. White text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.49:1 |
| White text | 4.67:1 |
Values
| HEX | #686DBB |
| RGB | rgb(104, 109, 187) |
| HSL | hsl(236, 38%, 57%) |
| OKLCH | oklch(56.6% 0.12 279.1) |
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 #686DBB | 4.67:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #686DBB | 4.49:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #686DBB text on white | 4.67:1 | AA | Lc 72.3 | Content text, not long reading |
| #686DBB text on black | 4.49:1 | AA large text | Lc -29.3 | 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
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8ED
oklch(88.6% 0.029 277.2)
-
Step 300
300
#B9BEE4
oklch(81% 0.054 279.2)
-
Step 400
400
#959BD6
oklch(70.7% 0.086 279.4)
-
Step 500
500
#7B82CB
oklch(63.1% 0.11 278.6)
-
Step 600
600 (this color)
#686DBB
oklch(56.6% 0.12 279.1)
-
Step 700
700
#54589E
oklch(49.1% 0.111 279)
-
Step 800
800
#454880
oklch(42.7% 0.092 279.4)
-
Step 900
900
#3A3D67
oklch(37.8% 0.071 279.3)
-
Step 950
950
#22243C
oklch(27.1% 0.045 279.3)
#686DBB 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) | #5077BE | 0.037 |
| Deuteranopia (no green cones) | #4A71B9 | 0.038 |
| Tritanopia (no blue cones) | #4C7D8B | 0.105 |
| Achromatopsia (no color) | #747474 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #686DBB
#686DBB
oklch(56.6% 0.12 279.1)
- #887600
#887600
oklch(56.5% 0.117 98.6)
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 #686DBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.053
- French Blue #436BAD ΔE 0.053
- Windows Blue #3778BF ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.059
- Iris #6258C4 ΔE 0.059
- Light Indigo #6D5ACF ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.064
- Deep Lavender #8D5EB7 ΔE 0.066
Use #686DBB 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.