#685AA8
Closest named color: Iris (#6258C4). oklch(51.8% 0.12 289.8), rgb(104, 90, 168).
Aa
White text reads best on this color (5.80:1).
About this color
#685AA8 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.120 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.046 away. White text reads best on it, at 5.80:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #685AA8 |
| RGB | rgb(104, 90, 168) |
| HSL | hsl(251, 31%, 51%) |
| OKLCH | oklch(51.8% 0.12 289.8) |
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 #685AA8 | 5.80:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #685AA8 | 3.61:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #685AA8 text on white | 5.80:1 | AA | Lc 78.9 | Fine for body text |
| #685AA8 text on black | 3.61:1 | AA large text | Lc -22.9 | 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 700.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#BFBBE4
oklch(80.9% 0.057 289.5)
-
Step 400
400
#9F97D7
oklch(70.7% 0.093 289.5)
-
Step 500
500
#897CCC
oklch(63.1% 0.119 290)
-
Step 600
600
#7364B9
oklch(55.6% 0.129 289.6)
-
Step 700
700 (this color)
#685AA8
oklch(51.8% 0.12 289.8)
-
Step 800
800
#4F4481
oklch(42.8% 0.099 289.9)
-
Step 900
900
#413A68
oklch(37.8% 0.077 289.1)
-
Step 950
950
#26223D
oklch(27% 0.049 289.5)
#685AA8 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) | #3E67AB | 0.061 |
| Deuteranopia (no green cones) | #3F63A6 | 0.058 |
| Tritanopia (no blue cones) | #576979 | 0.099 |
| Achromatopsia (no color) | #656565 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #685AA8
#685AA8
oklch(51.8% 0.12 289.8)
- #6D6D00
#6D6D00
oklch(51.8% 0.113 109.8)
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 #685AA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.058
- Dusky Blue #475F94 ΔE 0.060
- Light Indigo #6D5ACF ΔE 0.062
- French Blue #436BAD ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.064
- Twilight #4E518B ΔE 0.066
- Muted Purple #805B87 ΔE 0.067
Use #685AA8 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.