#684ECA
Closest named color: Iris (#6258C4). oklch(52% 0.184 287.9), rgb(104, 78, 202).
Aa
White text reads best on this color (5.94:1).
About this color
#684ECA is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.184 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.026 away. White text reads best on it, at 5.94:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #684ECA |
| RGB | rgb(104, 78, 202) |
| HSL | hsl(253, 54%, 55%) |
| OKLCH | oklch(52% 0.184 287.9) |
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 #684ECA | 5.94:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #684ECA | 3.53:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #684ECA text on white | 5.94:1 | AA | Lc 79.3 | Fine for body text |
| #684ECA text on black | 3.53:1 | AA large text | Lc -22.5 | 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
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D7D5F9
oklch(88.6% 0.049 287.9)
-
Step 300
300
#BDB8F7
oklch(80.9% 0.088 287.9)
-
Step 400
400
#9D91F4
oklch(70.8% 0.142 287.8)
-
Step 500
500
#8771EF
oklch(63% 0.182 288)
-
Step 600
600
#7256DE
oklch(55.6% 0.198 287.6)
-
Step 700
700 (this color)
#684ECA
oklch(52% 0.184 287.9)
-
Step 800
800
#4E3A9C
oklch(42.8% 0.152 287.5)
-
Step 900
900
#40337C
oklch(37.7% 0.119 287.5)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#684ECA 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) | #0067CE | 0.100 |
| Deuteranopia (no green cones) | #0060C7 | 0.098 |
| Tritanopia (no blue cones) | #476B85 | 0.150 |
| Achromatopsia (no color) | #646464 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684ECA
#684ECA
oklch(52% 0.184 287.9)
- #706D00
#706D00
oklch(52% 0.112 107.8)
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 #684ECA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.026
- Slate Blue #6A5ACD ΔE 0.028
- Light Indigo #6D5ACF ΔE 0.030
- Bluey Purple #6241C7 ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.039
- Warm Blue #4B57DB ΔE 0.051
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Blurple #5539CC ΔE 0.056
Use #684ECA 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.