#684BB3
Closest named color: Iris (#6258C4). oklch(49.8% 0.158 292.6), rgb(104, 75, 179).
Aa
White text reads best on this color (6.46:1).
About this color
#684BB3 is a medium-dark, vivid purple. In OKLCH its lightness is 50%, its chroma 0.158 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.039 away. White text reads best on it, at 6.46:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.24:1 |
| White text | 6.46:1 |
Values
| HEX | #684BB3 |
| RGB | rgb(104, 75, 179) |
| HSL | hsl(257, 41%, 50%) |
| OKLCH | oklch(49.8% 0.158 292.6) |
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 #684BB3 | 6.46:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #684BB3 | 3.24:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #684BB3 text on white | 6.46:1 | AA | Lc 81.8 | Fine for body text |
| #684BB3 text on black | 3.24:1 | AA large text | Lc -20.1 | 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
#D9D5F4
oklch(88.6% 0.042 291.4)
-
Step 300
300
#C1B8EE
oklch(80.8% 0.076 292.3)
-
Step 400
400
#A391E6
oklch(70.6% 0.123 292.7)
-
Step 500
500
#8E74DF
oklch(63.2% 0.157 292.5)
-
Step 600
600
#795ACC
oklch(55.6% 0.169 292.6)
-
Step 700
700 (this color)
#684BB3
oklch(49.8% 0.158 292.6)
-
Step 800
800
#533D8F
oklch(42.8% 0.13 292.4)
-
Step 900
900
#443572
oklch(37.7% 0.101 292.2)
-
Step 950
950
#281F43
oklch(27% 0.065 293)
#684BB3 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) | #0960B6 | 0.102 |
| Deuteranopia (no green cones) | #175CB1 | 0.097 |
| Tritanopia (no blue cones) | #546278 | 0.127 |
| Achromatopsia (no color) | #5E5E5E | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #684BB3
#684BB3
oklch(49.8% 0.158 292.6)
- #646800
#646800
oklch(49.7% 0.11 112.4)
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 #684BB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.039
- Bluey Purple #6241C7 ΔE 0.041
- Slate Blue #6A5ACD ΔE 0.052
- Light Indigo #6D5ACF ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.063
- Rebecca Purple #663399 ΔE 0.065
- Blurple #5539CC ΔE 0.066
Use #684BB3 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.