#5B43BB
Closest named color: Bluey Purple (#6241C7). oklch(47.9% 0.18 286.7), rgb(91, 67, 187).
Aa
White text reads best on this color (7.08:1).
About this color
#5B43BB is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.180 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.022 away. White text reads best on it, at 7.08:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #5B43BB |
| RGB | rgb(91, 67, 187) |
| HSL | hsl(252, 47%, 50%) |
| OKLCH | oklch(47.9% 0.18 286.7) |
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 #5B43BB | 7.08:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #5B43BB | 2.96:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #5B43BB text on white | 7.08:1 | AAA | Lc 84.1 | Fine for body text |
| #5B43BB text on black | 2.96:1 | Fails | Lc -17.9 | 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 700.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F8
oklch(88.5% 0.048 286.7)
-
Step 300
300
#BCB9F7
oklch(81% 0.087 286.5)
-
Step 400
400
#9B92F2
oklch(70.7% 0.138 286.6)
-
Step 500
500
#8573EE
oklch(63.1% 0.178 286.8)
-
Step 600
600
#7058DC
oklch(55.6% 0.193 286.7)
-
Step 700
700 (this color)
#5B43BB
oklch(47.9% 0.18 286.7)
-
Step 800
800
#4D3B9B
oklch(42.8% 0.15 286.9)
-
Step 900
900
#3F347B
oklch(37.7% 0.116 286.5)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#5B43BB 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) | #005BBF | 0.091 |
| Deuteranopia (no green cones) | #0055B9 | 0.088 |
| Tritanopia (no blue cones) | #376079 | 0.148 |
| Achromatopsia (no color) | #585858 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B43BB
#5B43BB
oklch(47.9% 0.18 286.7)
- #656000
#656000
oklch(47.8% 0.102 106.1)
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 #5B43BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.022
- Blue With A Hint Of Purple #533CC6 ΔE 0.027
- Blurple #5539CC ΔE 0.035
- Iris #6258C4 ΔE 0.052
- Majorelle Blue #3F37C9 ΔE 0.058
- Purple Blue #5D21D0 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.065
- Rebecca Purple #663399 ΔE 0.066
Use #5B43BB 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.