#684CAB
Closest named color: Iris (#6258C4). oklch(49.4% 0.146 294), rgb(104, 76, 171).
Aa
White text reads best on this color (6.54:1).
About this color
#684CAB is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.146 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.046 away. White text reads best on it, at 6.54:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.21:1 |
| White text | 6.54:1 |
Values
| HEX | #684CAB |
| RGB | rgb(104, 76, 171) |
| HSL | hsl(258, 38%, 48%) |
| OKLCH | oklch(49.4% 0.146 294) |
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 #684CAB | 6.54:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #684CAB | 3.21:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #684CAB text on white | 6.54:1 | AA | Lc 82.1 | Fine for body text |
| #684CAB text on black | 3.21:1 | AA large text | Lc -19.8 | 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 700.
-
Step 50
50
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F7
oklch(93.7% 0.02 292.1)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C2B8EB
oklch(80.8% 0.072 293.7)
-
Step 400
400
#A492E0
oklch(70.6% 0.113 293.9)
-
Step 500
500
#8F75D7
oklch(63% 0.145 294.1)
-
Step 600
600
#7A5CC5
oklch(55.6% 0.158 293.8)
-
Step 700
700 (this color)
#684CAB
oklch(49.4% 0.146 294)
-
Step 800
800
#543E8A
oklch(42.7% 0.122 294)
-
Step 900
900
#45366E
oklch(37.8% 0.094 293.8)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#684CAB 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) | #1F5EAE | 0.093 |
| Deuteranopia (no green cones) | #275CA9 | 0.088 |
| Tritanopia (no blue cones) | #576074 | 0.117 |
| Achromatopsia (no color) | #5D5D5D | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684CAB
#684CAB
oklch(49.4% 0.146 294)
- #616800
#616800
oklch(49.4% 0.111 114.3)
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 #684CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.046
- Bluey Purple #6241C7 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.060
- Rebecca Purple #663399 ΔE 0.061
- Light Indigo #6D5ACF ΔE 0.063
- Twilight #4E518B ΔE 0.069
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Dark Periwinkle #665FD1 ΔE 0.071
Use #684CAB 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.