#6359E9
Closest named color: Dark Periwinkle (#665FD1). oklch(55.7% 0.21 280.3), rgb(99, 89, 233).
Aa
White text reads best on this color (5.07:1).
About this color
#6359E9 is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.210 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.040 away. White text reads best on it, at 5.07:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.210) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #6359E9 |
| RGB | rgb(99, 89, 233) |
| HSL | hsl(244, 77%, 63%) |
| OKLCH | oklch(55.7% 0.21 280.3) |
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 #6359E9 | 5.07:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #6359E9 | 4.13:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #6359E9 text on white | 5.07:1 | AA | Lc 74.5 | Content text, not long reading |
| #6359E9 text on black | 4.13:1 | AA large text | Lc -27.2 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D2D6FC
oklch(88.5% 0.052 280.5)
-
Step 300
300
#B4BAFD
oklch(80.8% 0.095 280.1)
-
Step 400
400
#9093FC
oklch(70.6% 0.152 280.5)
-
Step 500
500
#7775F9
oklch(63.1% 0.192 280.1)
-
Step 600
600 (this color)
#6359E9
oklch(55.7% 0.21 280.3)
-
Step 700
700
#5247CA
oklch(49% 0.195 280.2)
-
Step 800
800
#433CA3
oklch(42.7% 0.16 280.2)
-
Step 900
900
#383582
oklch(37.8% 0.126 280.3)
-
Step 950
950
#20204C
oklch(27.1% 0.079 279.7)
#6359E9 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) | #0074EE | 0.086 |
| Deuteranopia (no green cones) | #0069E6 | 0.080 |
| Tritanopia (no blue cones) | #0B7D99 | 0.180 |
| Achromatopsia (no color) | #6E6E6E | 0.211 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6359E9
#6359E9
oklch(55.7% 0.21 280.3)
- #847400
#847400
oklch(55.7% 0.116 99.7)
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 #6359E9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.040
- Warm Blue #4B57DB ΔE 0.041
- Neon Blue #4361EE ΔE 0.042
- Light Indigo #6D5ACF ΔE 0.043
- Slate Blue #6A5ACD ΔE 0.044
- Royal Blue #4169E1 ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.053
- Iris #6258C4 ΔE 0.057
Use #6359E9 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.