#684FC6
Closest named color: Iris (#6258C4). oklch(51.8% 0.177 288.3), rgb(104, 79, 198).
Aa
White text reads best on this color (5.96:1).
About this color
#684FC6 is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.177 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.022 away. White text reads best on it, at 5.96:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.52:1 |
| White text | 5.96:1 |
Values
| HEX | #684FC6 |
| RGB | rgb(104, 79, 198) |
| HSL | hsl(253, 51%, 54%) |
| OKLCH | oklch(51.8% 0.177 288.3) |
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 #684FC6 | 5.96:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #684FC6 | 3.52:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #684FC6 text on white | 5.96:1 | AA | Lc 79.4 | Fine for body text |
| #684FC6 text on black | 3.52:1 | AA large text | Lc -22.4 | 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
#E9E8FA
oklch(93.7% 0.024 288.5)
-
Step 200
200
#D7D5F8
oklch(88.6% 0.048 288)
-
Step 300
300
#BEB8F5
oklch(80.9% 0.086 288.8)
-
Step 400
400
#9D91F1
oklch(70.7% 0.138 288.1)
-
Step 500
500
#8773EB
oklch(63.1% 0.174 288)
-
Step 600
600
#7357DA
oklch(55.6% 0.191 288.4)
-
Step 700
700 (this color)
#684FC6
oklch(51.8% 0.177 288.3)
-
Step 800
800
#4F3B99
oklch(42.8% 0.147 288.4)
-
Step 900
900
#41347A
oklch(37.8% 0.114 288.2)
-
Step 950
950
#261F47
oklch(27% 0.072 288.7)
#684FC6 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) | #0066CA | 0.099 |
| Deuteranopia (no green cones) | #0060C3 | 0.098 |
| Tritanopia (no blue cones) | #496A83 | 0.145 |
| Achromatopsia (no color) | #646464 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684FC6
#684FC6
oklch(51.8% 0.177 288.3)
- #6F6D00
#6F6D00
oklch(52% 0.112 108.5)
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 #684FC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.027
- Light Indigo #6D5ACF ΔE 0.030
- Bluey Purple #6241C7 ΔE 0.033
- Dark Periwinkle #665FD1 ΔE 0.039
- Warm Blue #4B57DB ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Blurple #5539CC ΔE 0.059
Use #684FC6 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.