#63299B
Closest named color: Rebecca Purple (#663399). oklch(42.6% 0.175 302.7), rgb(99, 41, 155).
Aa
White text reads best on this color (9.04:1).
About this color
#63299B is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.175 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.021 away. White text reads best on it, at 9.04:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #63299B |
| RGB | rgb(99, 41, 155) |
| HSL | hsl(271, 58%, 38%) |
| OKLCH | oklch(42.6% 0.175 302.7) |
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 #63299B | 9.04:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #63299B | 2.32:1 | Fails | Lc 14.0 | Not readable |
| #63299B text on white | 9.04:1 | AAA | Lc 90.0 | Preferred for body text |
| #63299B text on black | 2.32:1 | Fails | Lc -12.3 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#E0D1F9
oklch(88.5% 0.057 302.3)
-
Step 300
300
#CDB1F8
oklch(80.9% 0.102 302.2)
-
Step 400
400
#B584F4
oklch(70.7% 0.164 302.6)
-
Step 500
500
#A460EF
oklch(63.2% 0.209 302.8)
-
Step 600
600
#903FDD
oklch(55.5% 0.227 303)
-
Step 700
700
#7A2FC0
oklch(49% 0.211 302.6)
-
Step 800
800 (this color)
#63299B
oklch(42.6% 0.175 302.7)
-
Step 900
900
#51287C
oklch(37.7% 0.137 302.7)
-
Step 950
950
#2F1948
oklch(27% 0.085 302.7)
#63299B 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) | #00489E | 0.127 |
| Deuteranopia (no green cones) | #004899 | 0.128 |
| Tritanopia (no blue cones) | #57455F | 0.129 |
| Achromatopsia (no color) | #494949 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63299B
#63299B
oklch(42.6% 0.175 302.7)
- #445700
#445700
oklch(42.5% 0.104 123)
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 #63299B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.021
- Chrysanthemum #560BAD ΔE 0.055
- Grape #7209B7 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.067
- Blueberry #464196 ΔE 0.069
- Imperial Purple #480CA8 ΔE 0.073
- Blue With A Hint Of Purple #533CC6 ΔE 0.084
- Purple #800080 ΔE 0.084
Use #63299B 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.