#5437A9
Closest named color: Rebecca Purple (#663399). oklch(43.9% 0.173 288.9), rgb(84, 55, 169).
Aa
White text reads best on this color (8.41:1).
About this color
#5437A9 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.173 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 8.41:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.49:1 |
| White text | 8.41:1 |
Values
| HEX | #5437A9 |
| RGB | rgb(84, 55, 169) |
| HSL | hsl(255, 51%, 44%) |
| OKLCH | oklch(43.9% 0.173 288.9) |
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 #5437A9 | 8.41:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #5437A9 | 2.49:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #5437A9 text on white | 8.41:1 | AAA | Lc 88.4 | Fine for body text |
| #5437A9 text on black | 2.49:1 | Fails | Lc -13.7 | 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
#BEB6FE
oklch(80.9% 0.101 289)
-
Step 400
400
#9F8DFE
oklch(70.8% 0.161 288.9)
-
Step 500
500
#8A6BFC
oklch(63.2% 0.207 288.9)
-
Step 600
600
#764DEB
oklch(55.7% 0.224 288.9)
-
Step 700
700
#643CCC
oklch(49.1% 0.208 289.1)
-
Step 800
800 (this color)
#5437A9
oklch(43.9% 0.173 288.9)
-
Step 900
900
#422F83
oklch(37.7% 0.135 288.7)
-
Step 950
950
#261C4D
oklch(26.9% 0.087 288.6)
#5437A9 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) | #0050AC | 0.092 |
| Deuteranopia (no green cones) | #004AA7 | 0.089 |
| Tritanopia (no blue cones) | #36536B | 0.140 |
| Achromatopsia (no color) | #4D4D4D | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5437A9
#5437A9
oklch(43.9% 0.173 288.9)
- #575600
#575600
oklch(44% 0.095 109)
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 #5437A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.044
- Blueberry #464196 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.054
- Blurple #5539CC ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.058
- Chrysanthemum #560BAD ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.062
Use #5437A9 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.