#684CA4
Closest named color: Iris (#6258C4). oklch(48.9% 0.137 295.6), rgb(104, 76, 164).
Aa
White text reads best on this color (6.64:1).
About this color
#684CA4 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.137 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.056 away. White text reads best on it, at 6.64:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #684CA4 |
| RGB | rgb(104, 76, 164) |
| HSL | hsl(259, 37%, 47%) |
| OKLCH | oklch(48.9% 0.137 295.6) |
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 #684CA4 | 6.64:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #684CA4 | 3.15:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #684CA4 text on white | 6.64:1 | AA | Lc 82.6 | Fine for body text |
| #684CA4 text on black | 3.15:1 | AA large text | Lc -19.3 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DBD5EF
oklch(88.6% 0.036 296.2)
-
Step 300
300
#C4B9E7
oklch(81% 0.065 295.9)
-
Step 400
400
#A693DB
oklch(70.7% 0.105 295.7)
-
Step 500
500
#9176D2
oklch(63% 0.137 295.8)
-
Step 600
600
#7C5DBF
oklch(55.6% 0.148 295.8)
-
Step 700
700 (this color)
#684CA4
oklch(48.9% 0.137 295.6)
-
Step 800
800
#553F85
oklch(42.6% 0.113 295.7)
-
Step 900
900
#46366B
oklch(37.7% 0.089 295.7)
-
Step 950
950
#29203F
oklch(27% 0.057 295.7)
#684CA4 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) | #285DA7 | 0.088 |
| Deuteranopia (no green cones) | #2F5BA2 | 0.083 |
| Tritanopia (no blue cones) | #5A5E70 | 0.110 |
| Achromatopsia (no color) | #5C5C5C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684CA4
#684CA4
oklch(48.9% 0.137 295.6)
- #5E6700
#5E6700
oklch(48.9% 0.111 115.6)
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 #684CA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.056
- Rebecca Purple #663399 ΔE 0.058
- Twilight #4E518B ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.063
- Blueberry #464196 ΔE 0.069
- Slate Blue #6A5ACD ΔE 0.070
- Light Indigo #6D5ACF ΔE 0.073
- Dusky Blue #475F94 ΔE 0.075
Use #684CA4 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.