#5537AB
Closest named color: Rebecca Purple (#663399). oklch(44.2% 0.175 289.1), rgb(85, 55, 171).
Aa
White text reads best on this color (8.33:1).
About this color
#5537AB is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.175 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.044 away. White text reads best on it, at 8.33:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.52:1 |
| White text | 8.33:1 |
Values
| HEX | #5537AB |
| RGB | rgb(85, 55, 171) |
| HSL | hsl(256, 51%, 44%) |
| OKLCH | oklch(44.2% 0.175 289.1) |
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 #5537AB | 8.33:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #5537AB | 2.52:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #5537AB text on white | 8.33:1 | AAA | Lc 88.2 | Fine for body text |
| #5537AB text on black | 2.52:1 | Fails | Lc -14.0 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9F8CFF
oklch(70.7% 0.164 289.1)
-
Step 500
500
#8A6AFD
oklch(63.1% 0.209 289)
-
Step 600
600
#764BEC
oklch(55.5% 0.228 289)
-
Step 700
700
#643BCD
oklch(49.1% 0.211 289.1)
-
Step 800
800 (this color)
#5537AB
oklch(44.2% 0.175 289.1)
-
Step 900
900
#422E84
oklch(37.6% 0.137 288.7)
-
Step 950
950
#271C4D
oklch(27% 0.087 289.7)
#5537AB 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) | #0050AF | 0.093 |
| Deuteranopia (no green cones) | #004BA9 | 0.090 |
| Tritanopia (no blue cones) | #37546C | 0.143 |
| Achromatopsia (no color) | #4E4E4E | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5537AB
#5537AB
oklch(44.2% 0.175 289.1)
- #585700
#585700
oklch(44.3% 0.096 109)
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 #5537AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Blurple #5539CC ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Chrysanthemum #560BAD ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.061
Use #5537AB 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.