#684FD8
Closest named color: Light Indigo (#6D5ACF). oklch(53.2% 0.2 285.8), rgb(104, 79, 216).
Aa
White text reads best on this color (5.67:1).
About this color
#684FD8 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.200 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.031 away. White text reads best on it, at 5.67:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.69:1 |
| White text | 5.67:1 |
Values
| HEX | #684FD8 |
| RGB | rgb(104, 79, 216) |
| HSL | hsl(251, 64%, 58%) |
| OKLCH | oklch(53.2% 0.2 285.8) |
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 #684FD8 | 5.67:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #684FD8 | 3.69:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #684FD8 text on white | 5.67:1 | AA | Lc 77.9 | Fine for body text |
| #684FD8 text on black | 3.69:1 | AA large text | Lc -23.9 | 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 600.
-
Step 50
50
#F4F4FD
oklch(97% 0.012 286.2)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D5D5FA
oklch(88.5% 0.051 285.3)
-
Step 300
300
#BBB9F9
oklch(81% 0.09 285.6)
-
Step 400
400
#9991F6
oklch(70.6% 0.145 285.7)
-
Step 500
500
#8372F2
oklch(63.1% 0.185 285.9)
-
Step 600
600 (this color)
#684FD8
oklch(53.2% 0.2 285.8)
-
Step 700
700
#5D46C3
oklch(49.2% 0.186 285.8)
-
Step 800
800
#4B3A9D
oklch(42.6% 0.154 285.7)
-
Step 900
900
#3E337D
oklch(37.6% 0.121 285.8)
-
Step 950
950
#241F49
oklch(27% 0.075 285.6)
#684FD8 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) | #006ADC | 0.098 |
| Deuteranopia (no green cones) | #0063D5 | 0.095 |
| Tritanopia (no blue cones) | #3C708C | 0.166 |
| Achromatopsia (no color) | #676767 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684FD8
#684FD8
oklch(53.2% 0.2 285.8)
- #767000
#767000
oklch(53.3% 0.114 105.9)
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 #684FD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.031
- Slate Blue #6A5ACD ΔE 0.031
- Dark Periwinkle #665FD1 ΔE 0.038
- Iris #6258C4 ΔE 0.038
- Bluey Purple #6241C7 ΔE 0.041
- Warm Blue #4B57DB ΔE 0.043
- Burple #6832E3 ΔE 0.052
- Purpley Blue #5F34E7 ΔE 0.056
Use #684FD8 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.