#684DBF
Closest named color: Iris (#6258C4). oklch(51% 0.171 289.9), rgb(104, 77, 191).
Aa
White text reads best on this color (6.17:1).
About this color
#684DBF is a medium-dark, vivid purple. In OKLCH its lightness is 51%, its chroma 0.171 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.027 away. White text reads best on it, at 6.17:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #684DBF |
| RGB | rgb(104, 77, 191) |
| HSL | hsl(254, 47%, 53%) |
| OKLCH | oklch(51% 0.171 289.9) |
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 #684DBF | 6.17:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #684DBF | 3.40:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #684DBF text on white | 6.17:1 | AA | Lc 80.4 | Fine for body text |
| #684DBF text on black | 3.40:1 | AA large text | Lc -21.4 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F6
oklch(88.6% 0.045 289.6)
-
Step 300
300
#BFB8F3
oklch(80.9% 0.083 289.8)
-
Step 400
400
#A091ED
oklch(70.7% 0.133 290.1)
-
Step 500
500
#8A73E7
oklch(63.1% 0.169 289.8)
-
Step 600
600
#7558D5
oklch(55.5% 0.184 289.8)
-
Step 700
700 (this color)
#684DBF
oklch(51% 0.171 289.9)
-
Step 800
800
#503B95
oklch(42.6% 0.141 289.8)
-
Step 900
900
#423477
oklch(37.7% 0.11 289.7)
-
Step 950
950
#271F46
oklch(27.1% 0.07 290.3)
#684DBF 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) | #0063C3 | 0.101 |
| Deuteranopia (no green cones) | #005FBD | 0.101 |
| Tritanopia (no blue cones) | #4D677E | 0.141 |
| Achromatopsia (no color) | #616161 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684DBF
#684DBF
oklch(51% 0.171 289.9)
- #6B6B00
#6B6B00
oklch(51.1% 0.111 109.8)
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 #684DBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.027
- Bluey Purple #6241C7 ΔE 0.032
- Slate Blue #6A5ACD ΔE 0.036
- Light Indigo #6D5ACF ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Blurple #5539CC ΔE 0.059
- Warm Blue #4B57DB ΔE 0.062
Use #684DBF 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.