#686D9B
Closest named color: Dull Blue (#49759C). oklch(54.9% 0.072 279), rgb(104, 109, 155).
Aa
White text reads best on this color (4.94:1).
About this color
#686D9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.072 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.042 away. White text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #686D9B |
| RGB | rgb(104, 109, 155) |
| HSL | hsl(234, 20%, 51%) |
| OKLCH | oklch(54.9% 0.072 279) |
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 #686D9B | 4.94:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #686D9B | 4.24:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #686D9B text on white | 4.94:1 | AA | Lc 74.2 | Content text, not long reading |
| #686D9B text on black | 4.24:1 | AA large text | Lc -27.5 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BCBFD6
oklch(81% 0.032 279.7)
-
Step 400
400
#999EC1
oklch(70.7% 0.051 278.6)
-
Step 500
500
#8086B1
oklch(63.1% 0.065 278.2)
-
Step 600
600 (this color)
#686D9B
oklch(54.9% 0.072 279)
-
Step 700
700
#585D86
oklch(49.1% 0.066 278.3)
-
Step 800
800
#484C6D
oklch(42.7% 0.055 278.5)
-
Step 900
900
#3C3F58
oklch(37.6% 0.043 278.8)
-
Step 950
950
#232534
oklch(26.9% 0.028 278.4)
#686D9B 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) | #5F729D | 0.017 |
| Deuteranopia (no green cones) | #5C6E9A | 0.017 |
| Tritanopia (no blue cones) | #5B767D | 0.064 |
| Achromatopsia (no color) | #707070 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #686D9B
#686D9B
oklch(54.9% 0.072 279)
- #7C723F
#7C723F
oklch(54.9% 0.072 98.5)
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 #686D9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.042
- Metallic Blue #4F738E ΔE 0.045
- Grey Purple #826D8C ΔE 0.045
- Dark Lavender #856798 ΔE 0.046
- Stormy Blue #507B9C ΔE 0.047
- Muted Blue #3B719F ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.053
- Cerulean #457B9D ΔE 0.054
Use #686D9B 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.