#633070
Closest named color: Rebecca Purple (#663399). oklch(40.4% 0.117 319.1), rgb(99, 48, 112).
Aa
White text reads best on this color (9.60:1).
About this color
#633070 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.117 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.068 away. White text reads best on it, at 9.60:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #633070 |
| RGB | rgb(99, 48, 112) |
| HSL | hsl(288, 40%, 31%) |
| OKLCH | oklch(40.4% 0.117 319.1) |
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 #633070 | 9.60:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #633070 | 2.18:1 | Fails | Lc 12.1 | Not readable |
| #633070 text on white | 9.60:1 | AAA | Lc 91.8 | Preferred for body text |
| #633070 text on black | 2.18:1 | Fails | Lc -10.5 | 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
#F0E6F2
oklch(93.6% 0.019 320.6)
-
Step 200
200
#E4D2E9
oklch(88.5% 0.037 318.9)
-
Step 300
300
#D4B3DD
oklch(80.9% 0.068 318.9)
-
Step 400
400
#BE8ACC
oklch(70.7% 0.11 319)
-
Step 500
500
#AD6BBE
oklch(63% 0.14 319.2)
-
Step 600
600
#9851AB
oklch(55.6% 0.152 318.8)
-
Step 700
700
#824192
oklch(49.1% 0.141 319.4)
-
Step 800
800 (this color)
#633070
oklch(40.4% 0.117 319.1)
-
Step 900
900
#563060
oklch(37.8% 0.091 319)
-
Step 950
950
#321C38
oklch(26.9% 0.058 318.8)
#633070 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) | #234172 | 0.109 |
| Deuteranopia (no green cones) | #34476E | 0.096 |
| Tritanopia (no blue cones) | #633A4B | 0.075 |
| Achromatopsia (no color) | #454545 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633070
#633070
oklch(40.4% 0.117 319.1)
- #21570E
#21570E
oklch(40.5% 0.117 139.2)
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 #633070, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.070
- Grape Purple #5D1451 ΔE 0.073
- Rich Purple #720058 ΔE 0.076
- Velvet #750851 ΔE 0.078
- Purple #800080 ΔE 0.082
- Blueberry #464196 ΔE 0.086
- Twilight #4E518B ΔE 0.093
Use #633070 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.