#633676
Closest named color: Rebecca Purple (#663399). oklch(41.7% 0.113 315), rgb(99, 54, 118).
Aa
White text reads best on this color (9.05:1).
About this color
#633676 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.113 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.059 away. White text reads best on it, at 9.05:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.31:1 |
| White text | 9.05:1 |
Values
| HEX | #633676 |
| RGB | rgb(99, 54, 118) |
| HSL | hsl(282, 37%, 34%) |
| OKLCH | oklch(41.7% 0.113 315) |
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 #633676 | 9.05:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #633676 | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #633676 text on white | 9.05:1 | AAA | Lc 90.5 | Preferred for body text |
| #633676 text on black | 2.31:1 | Fails | Lc -11.8 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F3
oklch(93.6% 0.02 315.7)
-
Step 200
200
#E2D2EA
oklch(88.4% 0.037 314.6)
-
Step 300
300
#D1B4DE
oklch(80.8% 0.066 315.4)
-
Step 400
400
#BA8CCE
oklch(70.7% 0.106 315.3)
-
Step 500
500
#A86EC1
oklch(63.1% 0.135 315.1)
-
Step 600
600
#9354AD
oklch(55.5% 0.147 315.2)
-
Step 700
700
#7D4495
oklch(49% 0.137 314.9)
-
Step 800
800 (this color)
#633676
oklch(41.7% 0.113 315)
-
Step 900
900
#533161
oklch(37.6% 0.089 315.4)
-
Step 950
950
#311D39
oklch(27% 0.057 315.8)
#633676 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) | #274678 | 0.100 |
| Deuteranopia (no green cones) | #364A74 | 0.088 |
| Tritanopia (no blue cones) | #624050 | 0.076 |
| Achromatopsia (no color) | #494949 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633676
#633676
oklch(41.7% 0.113 315)
- #2F590D
#2F590D
oklch(41.7% 0.113 134.9)
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 #633676, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.061
- Blueberry #464196 ΔE 0.075
- Twilight #4E518B ΔE 0.078
- Dusk #4E5481 ΔE 0.083
- Purple #800080 ΔE 0.087
- Light Eggplant #894585 ΔE 0.088
- Grape Purple #5D1451 ΔE 0.088
Use #633676 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.