#633186
Closest named color: Rebecca Purple (#663399). oklch(42% 0.14 308.7), rgb(99, 49, 134).
Aa
White text reads best on this color (9.07:1).
About this color
#633186 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.140 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.032 away. White text reads best on it, at 9.07:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #633186 |
| RGB | rgb(99, 49, 134) |
| HSL | hsl(275, 46%, 36%) |
| OKLCH | oklch(42% 0.14 308.7) |
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 #633186 | 9.07:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #633186 | 2.31:1 | Fails | Lc 13.6 | Not readable |
| #633186 text on white | 9.07:1 | AAA | Lc 90.4 | Preferred for body text |
| #633186 text on black | 2.31:1 | Fails | Lc -11.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E2D2F1
oklch(88.6% 0.045 308.6)
-
Step 300
300
#D0B3EA
oklch(81% 0.082 308.5)
-
Step 400
400
#B889DF
oklch(70.8% 0.131 308.5)
-
Step 500
500
#A768D5
oklch(63.1% 0.168 309.1)
-
Step 600
600
#924DC3
oklch(55.7% 0.182 308.6)
-
Step 700
700
#7C3DA8
oklch(49.1% 0.169 308.5)
-
Step 800
800 (this color)
#633186
oklch(42% 0.14 308.7)
-
Step 900
900
#522E6D
oklch(37.7% 0.109 308.4)
-
Step 950
950
#301B40
oklch(26.9% 0.07 308.6)
#633186 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) | #084689 | 0.122 |
| Deuteranopia (no green cones) | #244984 | 0.108 |
| Tritanopia (no blue cones) | #5E4257 | 0.098 |
| Achromatopsia (no color) | #484848 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633186
#633186
oklch(42% 0.14 308.7)
- #3A5800
#3A5800
oklch(42.1% 0.111 128.8)
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 #633186, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.065
- Purple #800080 ΔE 0.077
- Twilight #4E518B ΔE 0.084
- Chrysanthemum #560BAD ΔE 0.088
- Dark Magenta #8B008B ΔE 0.091
- Indigo #4B0082 ΔE 0.092
Use #633186 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.