#5739A3
Closest named color: Rebecca Purple (#663399). oklch(44% 0.162 291.3), rgb(87, 57, 163).
Aa
White text reads best on this color (8.33:1).
About this color
#5739A3 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.162 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.034 away. White text reads best on it, at 8.33:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #5739A3 |
| RGB | rgb(87, 57, 163) |
| HSL | hsl(257, 48%, 43%) |
| OKLCH | oklch(44% 0.162 291.3) |
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 #5739A3 | 8.33:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #5739A3 | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #5739A3 text on white | 8.33:1 | AAA | Lc 88.3 | Fine for body text |
| #5739A3 text on black | 2.51:1 | Fails | Lc -13.9 | 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D9D4FA
oklch(88.6% 0.052 291.3)
-
Step 300
300
#C1B6FA
oklch(80.9% 0.095 291.5)
-
Step 400
400
#A28DF7
oklch(70.7% 0.152 291.1)
-
Step 500
500
#8E6CF3
oklch(63.1% 0.194 291.4)
-
Step 600
600
#7A4FE2
oklch(55.6% 0.211 291.4)
-
Step 700
700
#673FC4
oklch(49.2% 0.195 291.3)
-
Step 800
800 (this color)
#5739A3
oklch(44% 0.162 291.3)
-
Step 900
900
#44307E
oklch(37.7% 0.126 290.9)
-
Step 950
950
#281D4A
oklch(27.1% 0.08 291.4)
#5739A3 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) | #0050A6 | 0.095 |
| Deuteranopia (no green cones) | #004CA1 | 0.094 |
| Tritanopia (no blue cones) | #405269 | 0.130 |
| Achromatopsia (no color) | #4E4E4E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5739A3
#5739A3
oklch(44% 0.162 291.3)
- #555700
#555700
oklch(44% 0.097 111.3)
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 #5739A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.034
- Blueberry #464196 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.063
- Chrysanthemum #560BAD ΔE 0.065
- Blurple #5539CC ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.074
Use #5739A3 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.