#684AB4
Closest named color: Bluey Purple (#6241C7). oklch(49.7% 0.161 292.6), rgb(104, 74, 180).
Aa
White text reads best on this color (6.50:1).
About this color
#684AB4 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.161 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.038 away. White text reads best on it, at 6.50:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #684AB4 |
| RGB | rgb(104, 74, 180) |
| HSL | hsl(257, 42%, 50%) |
| OKLCH | oklch(49.7% 0.161 292.6) |
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 #684AB4 | 6.50:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #684AB4 | 3.22:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #684AB4 text on white | 6.50:1 | AA | Lc 81.9 | Fine for body text |
| #684AB4 text on black | 3.22:1 | AA large text | Lc -20.0 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#D9D4F4
oklch(88.4% 0.044 292.6)
-
Step 300
300
#C2B8EF
oklch(81% 0.077 292.9)
-
Step 400
400
#A391E7
oklch(70.7% 0.124 292.5)
-
Step 500
500
#8E73E0
oklch(63% 0.16 292.6)
-
Step 600
600
#7959CE
oklch(55.6% 0.173 292.4)
-
Step 700
700 (this color)
#684AB4
oklch(49.7% 0.161 292.6)
-
Step 800
800
#533C90
oklch(42.7% 0.133 292.5)
-
Step 900
900
#443473
oklch(37.6% 0.104 292.4)
-
Step 950
950
#281F43
oklch(27% 0.065 293)
#684AB4 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) | #005FB7 | 0.105 |
| Deuteranopia (no green cones) | #115CB2 | 0.100 |
| Tritanopia (no blue cones) | #536178 | 0.128 |
| Achromatopsia (no color) | #5E5E5E | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684AB4
#684AB4
oklch(49.7% 0.161 292.6)
- #646800
#646800
oklch(49.7% 0.11 112.4)
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 #684AB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.038
- Iris #6258C4 ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.064
- Blurple #5539CC ΔE 0.064
- Rebecca Purple #663399 ΔE 0.064
Use #684AB4 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.