#685D9B
Closest named color: Dusky Blue (#475F94). oklch(51.6% 0.097 290.8), rgb(104, 93, 155).
Aa
White text reads best on this color (5.78:1).
About this color
#685D9B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.097 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.049 away. White text reads best on it, at 5.78:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.62:1 |
| White text | 5.78:1 |
Values
| HEX | #685D9B |
| RGB | rgb(104, 93, 155) |
| HSL | hsl(251, 25%, 49%) |
| OKLCH | oklch(51.6% 0.097 290.8) |
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 #685D9B | 5.78:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #685D9B | 3.62:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #685D9B text on white | 5.78:1 | AA | Lc 78.9 | Fine for body text |
| #685D9B text on black | 3.62:1 | AA large text | Lc -22.9 | 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 700.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E8F2
oklch(93.5% 0.013 290.7)
-
Step 200
200
#D9D7EA
oklch(88.6% 0.026 290.7)
-
Step 300
300
#C0BCDD
oklch(80.9% 0.046 290.9)
-
Step 400
400
#A099CC
oklch(70.7% 0.074 290.7)
-
Step 500
500
#897FBF
oklch(63.1% 0.095 290.6)
-
Step 600
600
#7468AB
oklch(55.7% 0.103 290.9)
-
Step 700
700 (this color)
#685D9B
oklch(51.6% 0.097 290.8)
-
Step 800
800
#4F4677
oklch(42.6% 0.08 291)
-
Step 900
900
#423B60
oklch(37.6% 0.063 291.8)
-
Step 950
950
#262338
oklch(27% 0.039 290.1)
#685D9B 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) | #4A679D | 0.047 |
| Deuteranopia (no green cones) | #4B6499 | 0.044 |
| Tritanopia (no blue cones) | #5C6874 | 0.081 |
| Achromatopsia (no color) | #656565 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685D9B
#685D9B
oklch(51.6% 0.097 290.8)
- #6B6C21
#6B6C21
oklch(51.5% 0.096 110.1)
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 #685D9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.049
- Muted Purple #805B87 ΔE 0.050
- Dusty Purple #825F87 ΔE 0.055
- Dark Lavender #856798 ΔE 0.058
- Twilight #4E518B ΔE 0.059
- French Blue #436BAD ΔE 0.060
- Dusk #4E5481 ΔE 0.063
- Dull Purple #84597E ΔE 0.064
Use #685D9B 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.