#5B3BAC
Closest named color: Rebecca Purple (#663399). oklch(45.5% 0.171 291.1), rgb(91, 59, 172).
Aa
White text reads best on this color (7.87:1).
About this color
#5B3BAC is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.171 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 0.040 away. White text reads best on it, at 7.87:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #5B3BAC |
| RGB | rgb(91, 59, 172) |
| HSL | hsl(257, 49%, 45%) |
| OKLCH | oklch(45.5% 0.171 291.1) |
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 #5B3BAC | 7.87:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #5B3BAC | 2.66:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #5B3BAC text on white | 7.87:1 | AAA | Lc 86.8 | Fine for body text |
| #5B3BAC text on black | 2.66:1 | Fails | Lc -15.3 | Dividers and decoration only |
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
#D9D3FC
oklch(88.5% 0.056 291.9)
-
Step 300
300
#C0B5FD
oklch(80.8% 0.101 291)
-
Step 400
400
#A28CFC
oklch(70.8% 0.16 290.8)
-
Step 500
500
#8E6AF9
oklch(63.1% 0.204 291)
-
Step 600
600
#7A4CE8
oklch(55.7% 0.222 291)
-
Step 700
700
#673BCA
oklch(49.1% 0.207 290.9)
-
Step 800
800 (this color)
#5B3BAC
oklch(45.5% 0.171 291.1)
-
Step 900
900
#452E81
oklch(37.7% 0.133 291.5)
-
Step 950
950
#281C4C
oklch(27% 0.085 291.2)
#5B3BAC 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) | #0053B0 | 0.098 |
| Deuteranopia (no green cones) | #004FAA | 0.097 |
| Tritanopia (no blue cones) | #42566E | 0.137 |
| Achromatopsia (no color) | #515151 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3BAC
#5B3BAC
oklch(45.5% 0.171 291.1)
- #595B00
#595B00
oklch(45.4% 0.1 111.3)
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 #5B3BAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.040
- Blue With A Hint Of Purple #533CC6 ΔE 0.044
- Bluey Purple #6241C7 ΔE 0.046
- Blueberry #464196 ΔE 0.051
- Blurple #5539CC ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.063
- Purple Blue #5D21D0 ΔE 0.067
- Majorelle Blue #3F37C9 ΔE 0.067
Use #5B3BAC 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.