#4B3574
Closest named color: Dark Slate Blue (#483D8B). oklch(38.6% 0.105 297.4), rgb(75, 53, 116).
Aa
White text reads best on this color (10.19:1).
About this color
#4B3574 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.105 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.19:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.19:1 |
Values
| HEX | #4B3574 |
| RGB | rgb(75, 53, 116) |
| HSL | hsl(261, 37%, 33%) |
| OKLCH | oklch(38.6% 0.105 297.4) |
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 #4B3574 | 10.19:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #4B3574 | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #4B3574 text on white | 10.19:1 | AAA | Lc 93.5 | Preferred for body text |
| #4B3574 text on black | 2.06:1 | Fails | Lc -9.1 | 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 900.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD4F3
oklch(88.6% 0.043 297.3)
-
Step 300
300
#C6B6EE
oklch(80.9% 0.08 297.7)
-
Step 400
400
#A98FE5
oklch(70.7% 0.125 297)
-
Step 500
500
#9670DD
oklch(63.1% 0.161 297.7)
-
Step 600
600
#8156CB
oklch(55.7% 0.175 297.4)
-
Step 700
700
#6D45AF
oklch(49.1% 0.162 297.5)
-
Step 800
800
#593A8E
oklch(42.8% 0.134 297.5)
-
Step 900
900 (this color)
#4B3574
oklch(38.6% 0.105 297.4)
-
Step 950
950
#2A1E42
oklch(26.9% 0.066 297.1)
#4B3574 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) | #1D4176 | 0.069 |
| Deuteranopia (no green cones) | #234073 | 0.064 |
| Tritanopia (no blue cones) | #42414F | 0.081 |
| Achromatopsia (no color) | #414141 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3574
#4B3574
oklch(38.6% 0.105 297.4)
- #414A00
#414A00
oklch(38.7% 0.09 117.4)
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 #4B3574, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.061
- Rebecca Purple #663399 ΔE 0.079
- Twilight #4E518B ΔE 0.080
- Twilight Blue #0A437A ΔE 0.081
- Cobalt #1E488F ΔE 0.082
- Dusk #4E5481 ΔE 0.086
- Dark Grey Blue #29465B ΔE 0.087
Use #4B3574 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.