#685FDB
Closest named color: Dark Periwinkle (#665FD1). oklch(56.1% 0.183 282), rgb(104, 95, 219).
Aa
White text reads best on this color (4.94:1).
About this color
#685FDB is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.183 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.016 away. White text reads best on it, at 4.94:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #685FDB |
| RGB | rgb(104, 95, 219) |
| HSL | hsl(244, 63%, 62%) |
| OKLCH | oklch(56.1% 0.183 282) |
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 #685FDB | 4.94:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #685FDB | 4.24:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #685FDB text on white | 4.94:1 | AA | Lc 73.9 | Content text, not long reading |
| #685FDB text on black | 4.24:1 | AA large text | Lc -27.8 | 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
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B8BBF5
oklch(81% 0.082 282.1)
-
Step 400
400
#9495F0
oklch(70.7% 0.132 282)
-
Step 500
500
#7C78EB
oklch(63.1% 0.168 282)
-
Step 600
600 (this color)
#685FDB
oklch(56.1% 0.183 282)
-
Step 700
700
#564CBD
oklch(49.1% 0.171 282.1)
-
Step 800
800
#463F99
oklch(42.7% 0.142 282.1)
-
Step 900
900
#3A3779
oklch(37.7% 0.109 281.9)
-
Step 950
950
#222147
oklch(27.1% 0.069 282)
#685FDB 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) | #0074DF | 0.087 |
| Deuteranopia (no green cones) | #006CD8 | 0.085 |
| Tritanopia (no blue cones) | #377C94 | 0.157 |
| Achromatopsia (no color) | #707070 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685FDB
#685FDB
oklch(56.1% 0.183 282)
- #837600
#837600
oklch(56% 0.117 101.7)
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 #685FDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.016
- Light Indigo #6D5ACF ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.024
- Iris #6258C4 ΔE 0.040
- Medium Slate Blue #7B68EE ΔE 0.047
- Warm Blue #4B57DB ΔE 0.047
- Royal Blue #4169E1 ΔE 0.051
- Purpley #8756E4 ΔE 0.053
Use #685FDB 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.