#684BB7
Closest named color: Iris (#6258C4). oklch(50.1% 0.163 291.8), rgb(104, 75, 183).
Aa
White text reads best on this color (6.40:1).
About this color
#684BB7 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.163 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.035 away. White text reads best on it, at 6.40:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #684BB7 |
| RGB | rgb(104, 75, 183) |
| HSL | hsl(256, 43%, 51%) |
| OKLCH | oklch(50.1% 0.163 291.8) |
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 #684BB7 | 6.40:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #684BB7 | 3.27:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #684BB7 text on white | 6.40:1 | AA | Lc 81.5 | Fine for body text |
| #684BB7 text on black | 3.27:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#D9D5F5
oklch(88.6% 0.044 291.2)
-
Step 300
300
#C1B8F0
oklch(80.9% 0.079 291.9)
-
Step 400
400
#A291E9
oklch(70.7% 0.127 291.7)
-
Step 500
500
#8D73E2
oklch(63.1% 0.162 291.9)
-
Step 600
600
#7859D0
oklch(55.6% 0.176 291.6)
-
Step 700
700 (this color)
#684BB7
oklch(50.1% 0.163 291.8)
-
Step 800
800
#523C91
oklch(42.6% 0.134 291.6)
-
Step 900
900
#443474
oklch(37.7% 0.106 292.1)
-
Step 950
950
#281F44
oklch(27% 0.067 292.5)
#684BB7 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) | #0060BB | 0.103 |
| Deuteranopia (no green cones) | #0B5DB5 | 0.101 |
| Tritanopia (no blue cones) | #52637A | 0.131 |
| Achromatopsia (no color) | #5F5F5F | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684BB7
#684BB7
oklch(50.1% 0.163 291.8)
- #666900
#666900
oklch(50.1% 0.111 111.7)
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 #684BB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.035
- Bluey Purple #6241C7 ΔE 0.036
- Slate Blue #6A5ACD ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.059
- Blurple #5539CC ΔE 0.062
- Rebecca Purple #663399 ΔE 0.069
Use #684BB7 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.