#685FF9
Closest named color: Medium Slate Blue (#7B68EE). oklch(58.3% 0.222 279.6), rgb(104, 95, 249).
Aa
Black text reads best on this color (4.59:1).
About this color
#685FF9 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.222 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.041 away. Black text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.222) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.59:1 |
| White text | 4.57:1 |
Values
| HEX | #685FF9 |
| RGB | rgb(104, 95, 249) |
| HSL | hsl(244, 93%, 67%) |
| OKLCH | oklch(58.3% 0.222 279.6) |
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 #685FF9 | 4.57:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #685FF9 | 4.59:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #685FF9 text on white | 4.57:1 | AA | Lc 71.2 | Content text, not long reading |
| #685FF9 text on black | 4.59:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FE
oklch(93.5% 0.03 279.6)
-
Step 200
200
#D1D6FE
oklch(88.5% 0.055 279.6)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8E93FF
oklch(70.6% 0.156 279.6)
-
Step 500
500
#7573FF
oklch(63% 0.202 279.5)
-
Step 600
600 (this color)
#685FF9
oklch(58.3% 0.222 279.6)
-
Step 700
700
#5144D0
oklch(49% 0.206 279.7)
-
Step 800
800
#423AA8
oklch(42.7% 0.17 279.7)
-
Step 900
900
#373385
oklch(37.6% 0.133 280)
-
Step 950
950
#201F4E
oklch(27% 0.084 280.1)
#685FF9 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) | #007CFE | 0.089 |
| Deuteranopia (no green cones) | #0070F6 | 0.081 |
| Tritanopia (no blue cones) | #0085A3 | 0.190 |
| Achromatopsia (no color) | #767676 | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685FF9
#685FF9
oklch(58.3% 0.222 279.6)
- #8D7C00
#8D7C00
oklch(58.4% 0.121 99.7)
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 #685FF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.041
- Neon Blue #4361EE ΔE 0.049
- Cornflower #6A79F7 ΔE 0.060
- Purpley #8756E4 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.061
- Royal Blue #4169E1 ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.065
- Warm Blue #4B57DB ΔE 0.065
Use #685FF9 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.