#685DC6
Closest named color: Slate Blue (#6A5ACD). oklch(54.2% 0.158 284.6), rgb(104, 93, 198).
Aa
White text reads best on this color (5.28:1).
About this color
#685DC6 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.158 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.014 away. White text reads best on it, at 5.28:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.96:1 |
| White text | 5.28:1 |
Values
| HEX | #685DC6 |
| RGB | rgb(104, 93, 198) |
| HSL | hsl(246, 48%, 57%) |
| OKLCH | oklch(54.2% 0.158 284.6) |
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 #685DC6 | 5.28:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #685DC6 | 3.96:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #685DC6 text on white | 5.28:1 | AA | Lc 76.0 | Fine for body text |
| #685DC6 text on black | 3.96:1 | AA large text | Lc -25.7 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F3
oklch(88.5% 0.04 285.6)
-
Step 300
300
#BBBBEE
oklch(80.9% 0.072 284.7)
-
Step 400
400
#9996E5
oklch(70.7% 0.114 284.8)
-
Step 500
500
#817ADD
oklch(63% 0.146 284.6)
-
Step 600
600 (this color)
#685DC6
oklch(54.2% 0.158 284.6)
-
Step 700
700
#5A50AF
oklch(49.1% 0.146 284.4)
-
Step 800
800
#4A428E
oklch(42.8% 0.121 284.8)
-
Step 900
900
#3D3871
oklch(37.6% 0.095 284.8)
-
Step 950
950
#242142
oklch(26.9% 0.06 285.8)
#685DC6 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) | #276FCA | 0.077 |
| Deuteranopia (no green cones) | #2268C4 | 0.077 |
| Tritanopia (no blue cones) | #487488 | 0.135 |
| Achromatopsia (no color) | #6C6C6C | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685DC6
#685DC6
oklch(54.2% 0.158 284.6)
- #7A7200
#7A7200
oklch(54.2% 0.115 104.7)
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 #685DC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.014
- Iris #6258C4 ΔE 0.016
- Dark Periwinkle #665FD1 ΔE 0.017
- Light Indigo #6D5ACF ΔE 0.018
- Warm Blue #4B57DB ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.064
- Royal Blue #4169E1 ΔE 0.065
- Deep Lavender #8D5EB7 ΔE 0.066
Use #685DC6 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.