#633569
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.1 322.8), rgb(99, 53, 105).
Aa
White text reads best on this color (9.35:1).
About this color
#633569 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.100 and its hue 323°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.075 away. White text reads best on it, at 9.35:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #633569 |
| RGB | rgb(99, 53, 105) |
| HSL | hsl(293, 33%, 31%) |
| OKLCH | oklch(40.8% 0.1 322.8) |
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 #633569 | 9.35:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #633569 | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #633569 text on white | 9.35:1 | AAA | Lc 91.3 | Preferred for body text |
| #633569 text on black | 2.24:1 | Fails | Lc -11.0 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#F0E6F1
oklch(93.6% 0.018 323)
-
Step 200
200
#E4D2E6
oklch(88.4% 0.033 322.8)
-
Step 300
300
#D3B5D7
oklch(81% 0.057 322.3)
-
Step 400
400
#BD8DC3
oklch(70.7% 0.094 322.7)
-
Step 500
500
#AC6FB3
oklch(63% 0.12 323.2)
-
Step 600
600
#97569F
oklch(55.6% 0.131 323)
-
Step 700
700
#804688
oklch(49% 0.121 322.6)
-
Step 800
800 (this color)
#633569
oklch(40.8% 0.1 322.8)
-
Step 900
900
#553259
oklch(37.6% 0.078 323.3)
-
Step 950
950
#321E34
oklch(27% 0.048 323.6)
#633569 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) | #2E436B | 0.093 |
| Deuteranopia (no green cones) | #3B4867 | 0.083 |
| Tritanopia (no blue cones) | #643B4A | 0.060 |
| Achromatopsia (no color) | #474747 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633569
#633569
oklch(40.8% 0.1 322.8)
- #245722
#245722
oklch(40.8% 0.1 142.8)
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 #633569, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.075
- Grape Purple #5D1451 ΔE 0.076
- Purple Brown #673A3F ΔE 0.077
- Brownish Purple #76424E ΔE 0.077
- Velvet #750851 ΔE 0.080
- Rebecca Purple #663399 ΔE 0.081
- Rich Purple #720058 ΔE 0.082
- Twilight #4E518B ΔE 0.088
Use #633569 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.