#685DCF
Closest named color: Dark Periwinkle (#665FD1). oklch(54.9% 0.17 283.6), rgb(104, 93, 207).
Aa
White text reads best on this color (5.17:1).
About this color
#685DCF is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.170 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.006 away. White text reads best on it, at 5.17:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.05:1 |
| White text | 5.17:1 |
Values
| HEX | #685DCF |
| RGB | rgb(104, 93, 207) |
| HSL | hsl(246, 54%, 59%) |
| OKLCH | oklch(54.9% 0.17 283.6) |
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 #685DCF | 5.17:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #685DCF | 4.05:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #685DCF text on white | 5.17:1 | AA | Lc 75.4 | Fine for body text |
| #685DCF text on black | 4.05:1 | AA large text | Lc -26.4 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D5D6F5
oklch(88.5% 0.042 284)
-
Step 300
300
#BABBF1
oklch(81% 0.076 283.7)
-
Step 400
400
#9796EA
oklch(70.8% 0.122 283.4)
-
Step 500
500
#7F79E4
oklch(63.1% 0.157 283.5)
-
Step 600
600 (this color)
#685DCF
oklch(54.9% 0.17 283.6)
-
Step 700
700
#594EB5
oklch(49.1% 0.157 283.8)
-
Step 800
800
#484193
oklch(42.8% 0.13 283.3)
-
Step 900
900
#3C3875
oklch(37.8% 0.101 283.4)
-
Step 950
950
#232145
oklch(27% 0.065 283.6)
#685DCF 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) | #1771D3 | 0.084 |
| Deuteranopia (no green cones) | #0969CD | 0.085 |
| Tritanopia (no blue cones) | #42778D | 0.145 |
| Achromatopsia (no color) | #6D6D6D | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685DCF
#685DCF
oklch(54.9% 0.17 283.6)
- #7D7300
#7D7300
oklch(54.7% 0.115 103.5)
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 #685DCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.006
- Slate Blue #6A5ACD ΔE 0.008
- Light Indigo #6D5ACF ΔE 0.010
- Iris #6258C4 ΔE 0.023
- Warm Blue #4B57DB ΔE 0.049
- Royal Blue #4169E1 ΔE 0.058
- Purpley #8756E4 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.061
Use #685DCF 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.