#684FAB
Closest named color: Iris (#6258C4). oklch(49.9% 0.142 293.1), rgb(104, 79, 171).
Aa
White text reads best on this color (6.37:1).
About this color
#684FAB is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.142 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.043 away. White text reads best on it, at 6.37:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #684FAB |
| RGB | rgb(104, 79, 171) |
| HSL | hsl(256, 37%, 49%) |
| OKLCH | oklch(49.9% 0.142 293.1) |
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 #684FAB | 6.37:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #684FAB | 3.29:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #684FAB text on white | 6.37:1 | AA | Lc 81.4 | Fine for body text |
| #684FAB text on black | 3.29:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#D9D5F1
oklch(88.5% 0.038 292.2)
-
Step 300
300
#C2B9EA
oklch(81% 0.069 293.2)
-
Step 400
400
#A393DF
oklch(70.6% 0.11 293)
-
Step 500
500
#8E77D6
oklch(63.2% 0.14 293.1)
-
Step 600
600
#795EC3
oklch(55.7% 0.152 293.2)
-
Step 700
700 (this color)
#684FAB
oklch(49.9% 0.142 293.1)
-
Step 800
800
#533F88
oklch(42.6% 0.117 293.4)
-
Step 900
900
#44366D
oklch(37.6% 0.092 293.2)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#684FAB 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) | #2760AE | 0.086 |
| Deuteranopia (no green cones) | #2C5DA9 | 0.082 |
| Tritanopia (no blue cones) | #576275 | 0.115 |
| Achromatopsia (no color) | #5F5F5F | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684FAB
#684FAB
oklch(49.9% 0.142 293.1)
- #646900
#646900
oklch(49.9% 0.111 113)
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 #684FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.043
- Slate Blue #6A5ACD ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.068
- Twilight #4E518B ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
Use #684FAB 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.