#5B41A3
Closest named color: Rebecca Purple (#663399). oklch(45.7% 0.151 291.5), rgb(91, 65, 163).
Aa
White text reads best on this color (7.69:1).
About this color
#5B41A3 is a medium-dark, vivid purple. In OKLCH its lightness is 46%, its chroma 0.151 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 0.037 away. White text reads best on it, at 7.69:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #5B41A3 |
| RGB | rgb(91, 65, 163) |
| HSL | hsl(256, 43%, 45%) |
| OKLCH | oklch(45.7% 0.151 291.5) |
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 #5B41A3 | 7.69:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #5B41A3 | 2.72:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #5B41A3 text on white | 7.69:1 | AAA | Lc 86.4 | Fine for body text |
| #5B41A3 text on black | 2.72:1 | Fails | Lc -15.7 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F8
oklch(88.5% 0.049 291.7)
-
Step 300
300
#C1B7F6
oklch(81% 0.088 291.6)
-
Step 400
400
#A28FF1
oklch(70.7% 0.141 291.3)
-
Step 500
500
#8D6FEC
oklch(63% 0.181 291.4)
-
Step 600
600
#7953DA
oklch(55.5% 0.197 291.7)
-
Step 700
700
#6643BD
oklch(49.1% 0.182 291.4)
-
Step 800
800 (this color)
#5B41A3
oklch(45.7% 0.151 291.5)
-
Step 900
900
#44327A
oklch(37.7% 0.118 291.2)
-
Step 950
950
#281E47
oklch(27% 0.074 292)
#5B41A3 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) | #0055A6 | 0.095 |
| Deuteranopia (no green cones) | #0151A1 | 0.094 |
| Tritanopia (no blue cones) | #46576B | 0.123 |
| Achromatopsia (no color) | #535353 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B41A3
#5B41A3
oklch(45.7% 0.151 291.5)
- #5A5C00
#5A5C00
oklch(45.8% 0.101 111.2)
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 #5B41A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.037
- Blueberry #464196 ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.052
- Bluey Purple #6241C7 ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Twilight #4E518B ΔE 0.063
- Blurple #5539CC ΔE 0.068
- Iris #6258C4 ΔE 0.074
Use #5B41A3 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.