#633AA9
Closest named color: Rebecca Purple (#663399). oklch(45.9% 0.169 296), rgb(99, 58, 169).
Aa
White text reads best on this color (7.75:1).
About this color
#633AA9 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.169 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.030 away. White text reads best on it, at 7.75:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #633AA9 |
| RGB | rgb(99, 58, 169) |
| HSL | hsl(262, 49%, 45%) |
| OKLCH | oklch(45.9% 0.169 296) |
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 #633AA9 | 7.75:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #633AA9 | 2.70:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #633AA9 text on white | 7.75:1 | AAA | Lc 86.4 | Fine for body text |
| #633AA9 text on black | 2.70:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FB
oklch(93.5% 0.029 296.7)
-
Step 200
200
#DCD2FA
oklch(88.4% 0.055 296.7)
-
Step 300
300
#C6B4FA
oklch(81% 0.099 295.9)
-
Step 400
400
#AA89F7
oklch(70.7% 0.159 295.9)
-
Step 500
500
#9767F3
oklch(63.1% 0.201 295.9)
-
Step 600
600
#8348E2
oklch(55.6% 0.22 296)
-
Step 700
700
#6F38C4
oklch(49.1% 0.204 295.9)
-
Step 800
800 (this color)
#633AA9
oklch(45.9% 0.169 296)
-
Step 900
900
#4A2C7E
oklch(37.7% 0.132 296.3)
-
Step 950
950
#2B1B4A
oklch(27% 0.084 296)
#633AA9 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) | #0053AC | 0.111 |
| Deuteranopia (no green cones) | #0051A7 | 0.111 |
| Tritanopia (no blue cones) | #51546C | 0.132 |
| Achromatopsia (no color) | #525252 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633AA9
#633AA9
oklch(45.9% 0.169 296)
- #555E00
#555E00
oklch(45.8% 0.105 116.1)
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 #633AA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.030
- Bluey Purple #6241C7 ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.055
- Blueberry #464196 ΔE 0.059
- Blurple #5539CC ΔE 0.062
- Grape #7209B7 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.068
- Chrysanthemum #560BAD ΔE 0.073
Use #633AA9 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.