#5537A5
Closest named color: Rebecca Purple (#663399). oklch(43.7% 0.168 290.3), rgb(85, 55, 165).
Aa
White text reads best on this color (8.48:1).
About this color
#5537A5 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.168 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.038 away. White text reads best on it, at 8.48:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #5537A5 |
| RGB | rgb(85, 55, 165) |
| HSL | hsl(256, 50%, 43%) |
| OKLCH | oklch(43.7% 0.168 290.3) |
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 #5537A5 | 8.48:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #5537A5 | 2.47:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #5537A5 text on white | 8.48:1 | AAA | Lc 88.7 | Fine for body text |
| #5537A5 text on black | 2.47:1 | Fails | Lc -13.5 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D8D4FB
oklch(88.5% 0.053 290)
-
Step 300
300
#C0B6FC
oklch(80.9% 0.098 290.6)
-
Step 400
400
#A18DFA
oklch(70.7% 0.156 290.3)
-
Step 500
500
#8C6BF7
oklch(63% 0.2 290.3)
-
Step 600
600
#784EE6
oklch(55.6% 0.217 290.2)
-
Step 700
700
#663DC8
oklch(49.1% 0.202 290.5)
-
Step 800
800 (this color)
#5537A5
oklch(43.7% 0.168 290.3)
-
Step 900
900
#442F80
oklch(37.7% 0.13 290.7)
-
Step 950
950
#271D4B
oklch(27% 0.082 289.8)
#5537A5 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) | #004FA8 | 0.094 |
| Deuteranopia (no green cones) | #004AA3 | 0.092 |
| Tritanopia (no blue cones) | #3B5269 | 0.136 |
| Achromatopsia (no color) | #4D4D4D | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5537A5
#5537A5
oklch(43.7% 0.168 290.3)
- #555600
#555600
oklch(43.8% 0.096 110.6)
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 #5537A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.038
- Blueberry #464196 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Chrysanthemum #560BAD ΔE 0.060
- Blurple #5539CC ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.069
Use #5537A5 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.