#55309C
Closest named color: Rebecca Purple (#663399). oklch(41.9% 0.166 293.7), rgb(85, 48, 156).
Aa
White text reads best on this color (9.17:1).
About this color
#55309C is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.166 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.035 away. White text reads best on it, at 9.17:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #55309C |
| RGB | rgb(85, 48, 156) |
| HSL | hsl(261, 53%, 40%) |
| OKLCH | oklch(41.9% 0.166 293.7) |
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 #55309C | 9.17:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #55309C | 2.28:1 | Fails | Lc 13.4 | Not readable |
| #55309C text on white | 9.17:1 | AAA | Lc 90.5 | Preferred for body text |
| #55309C text on black | 2.28:1 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3FA
oklch(88.5% 0.054 293.5)
-
Step 300
300
#C3B5FA
oklch(80.9% 0.097 293.4)
-
Step 400
400
#A68BF7
oklch(70.6% 0.155 293.5)
-
Step 500
500
#936AF3
oklch(63.2% 0.197 293.8)
-
Step 600
600
#7F4CE2
oklch(55.7% 0.215 293.9)
-
Step 700
700
#6B3BC4
oklch(49% 0.2 293.7)
-
Step 800
800 (this color)
#55309C
oklch(41.9% 0.166 293.7)
-
Step 900
900
#472E7E
oklch(37.7% 0.129 293.6)
-
Step 950
950
#291C4A
oklch(27% 0.082 293.1)
#55309C 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) | #00499F | 0.100 |
| Deuteranopia (no green cones) | #00469A | 0.099 |
| Tritanopia (no blue cones) | #414B62 | 0.131 |
| Achromatopsia (no color) | #484848 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55309C
#55309C
oklch(41.9% 0.166 293.7)
- #4D5200
#4D5200
oklch(42% 0.094 113.8)
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 #55309C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.035
- Blueberry #464196 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.045
- Chrysanthemum #560BAD ΔE 0.052
- Imperial Purple #480CA8 ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.072
- Indigo Blue #3A18B1 ΔE 0.075
- Grape #7209B7 ΔE 0.077
Use #55309C 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.