#685AD2
Closest named color: Slate Blue (#6A5ACD). oklch(54.5% 0.178 284.1), rgb(104, 90, 210).
Aa
White text reads best on this color (5.27:1).
About this color
#685AD2 is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.178 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.008 away. White text reads best on it, at 5.27:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #685AD2 |
| RGB | rgb(104, 90, 210) |
| HSL | hsl(247, 57%, 59%) |
| OKLCH | oklch(54.5% 0.178 284.1) |
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 #685AD2 | 5.27:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #685AD2 | 3.98:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #685AD2 text on white | 5.27:1 | AA | Lc 75.9 | Fine for body text |
| #685AD2 text on black | 3.98:1 | AA large text | Lc -25.9 | 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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D5D6F6
oklch(88.5% 0.044 284)
-
Step 300
300
#BABAF3
oklch(80.9% 0.08 284.5)
-
Step 400
400
#9795ED
oklch(70.7% 0.127 283.7)
-
Step 500
500
#8077E7
oklch(63% 0.164 284.3)
-
Step 600
600 (this color)
#685AD2
oklch(54.5% 0.178 284.1)
-
Step 700
700
#594CB9
oklch(49.1% 0.165 283.9)
-
Step 800
800
#493F96
oklch(42.7% 0.137 284.2)
-
Step 900
900
#3C3777
oklch(37.7% 0.106 283.6)
-
Step 950
950
#232046
oklch(26.9% 0.069 284.3)
#685AD2 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) | #006FD6 | 0.091 |
| Deuteranopia (no green cones) | #0068CF | 0.089 |
| Tritanopia (no blue cones) | #40758D | 0.150 |
| Achromatopsia (no color) | #6C6C6C | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685AD2
#685AD2
oklch(54.5% 0.178 284.1)
- #7C7300
#7C7300
oklch(54.6% 0.115 104.1)
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 #685AD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.008
- Light Indigo #6D5ACF ΔE 0.009
- Dark Periwinkle #665FD1 ΔE 0.012
- Iris #6258C4 ΔE 0.024
- Warm Blue #4B57DB ΔE 0.045
- Purpley #8756E4 ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.059
Use #685AD2 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.