#6338A1
Closest named color: Rebecca Purple (#663399). oklch(45% 0.162 298.5), rgb(99, 56, 161).
Aa
White text reads best on this color (8.04:1).
About this color
#6338A1 is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.162 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.017 away. White text reads best on it, at 8.04:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.61:1 |
| White text | 8.04:1 |
Values
| HEX | #6338A1 |
| RGB | rgb(99, 56, 161) |
| HSL | hsl(265, 48%, 43%) |
| OKLCH | oklch(45% 0.162 298.5) |
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 #6338A1 | 8.04:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #6338A1 | 2.61:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #6338A1 text on white | 8.04:1 | AAA | Lc 87.4 | Fine for body text |
| #6338A1 text on black | 2.61:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DDD2F8
oklch(88.5% 0.053 298.5)
-
Step 300
300
#C8B4F6
oklch(81% 0.094 298.2)
-
Step 400
400
#AD89F2
oklch(70.7% 0.152 298.2)
-
Step 500
500
#9B67ED
oklch(63.1% 0.195 298.6)
-
Step 600
600
#864ADB
oklch(55.6% 0.21 298.2)
-
Step 700
700
#7239BE
oklch(49% 0.196 298.4)
-
Step 800
800 (this color)
#6338A1
oklch(45% 0.162 298.5)
-
Step 900
900
#4C2D7A
oklch(37.8% 0.126 298.8)
-
Step 950
950
#2C1B48
oklch(27% 0.081 298.2)
#6338A1 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) | #0050A4 | 0.114 |
| Deuteranopia (no green cones) | #004F9F | 0.115 |
| Tritanopia (no blue cones) | #555067 | 0.125 |
| Achromatopsia (no color) | #505050 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6338A1
#6338A1
oklch(45% 0.162 298.5)
- #505D00
#505D00
oklch(45.1% 0.106 118.7)
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 #6338A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.017
- Blueberry #464196 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Grape #7209B7 ΔE 0.069
- Chrysanthemum #560BAD ΔE 0.072
- Blurple #5539CC ΔE 0.074
Use #6338A1 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.