#6333A0
Closest named color: Rebecca Purple (#663399). oklch(44.2% 0.168 299.7), rgb(99, 51, 160).
Aa
White text reads best on this color (8.36:1).
About this color
#6333A0 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.168 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.013 away. White text reads best on it, at 8.36:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.51:1 |
| White text | 8.36:1 |
Values
| HEX | #6333A0 |
| RGB | rgb(99, 51, 160) |
| HSL | hsl(266, 52%, 41%) |
| OKLCH | oklch(44.2% 0.168 299.7) |
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 #6333A0 | 8.36:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #6333A0 | 2.51:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #6333A0 text on white | 8.36:1 | AAA | Lc 88.2 | Fine for body text |
| #6333A0 text on black | 2.51:1 | Fails | Lc -13.9 | 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
#ECE6FB
oklch(93.6% 0.029 298.9)
-
Step 200
200
#DED2F9
oklch(88.6% 0.054 299.3)
-
Step 300
300
#CAB3F7
oklch(81% 0.097 299.7)
-
Step 400
400
#B087F3
oklch(70.6% 0.157 299.9)
-
Step 500
500
#9E65EF
oklch(63.2% 0.2 299.7)
-
Step 600
600
#8946DD
oklch(55.6% 0.218 299.5)
-
Step 700
700
#7536C0
oklch(49.2% 0.203 299.7)
-
Step 800
800 (this color)
#6333A0
oklch(44.2% 0.168 299.7)
-
Step 900
900
#4D2B7B
oklch(37.6% 0.131 299.7)
-
Step 950
950
#2D1A48
oklch(26.9% 0.083 299.9)
#6333A0 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) | #004DA3 | 0.118 |
| Deuteranopia (no green cones) | #004D9E | 0.119 |
| Tritanopia (no blue cones) | #554C65 | 0.126 |
| Achromatopsia (no color) | #4E4E4E | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6333A0
#6333A0
oklch(44.2% 0.168 299.7)
- #4C5B00
#4C5B00
oklch(44.3% 0.105 120.1)
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 #6333A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.013
- Blueberry #464196 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.062
- Grape #7209B7 ΔE 0.062
- Chrysanthemum #560BAD ΔE 0.064
- Bluey Purple #6241C7 ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Blurple #5539CC ΔE 0.077
Use #6333A0 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.