#4B337B
Closest named color: Dark Slate Blue (#483D8B). oklch(38.7% 0.118 295.8), rgb(75, 51, 123).
Aa
White text reads best on this color (10.20:1).
About this color
#4B337B is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.118 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 10.20:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #4B337B |
| RGB | rgb(75, 51, 123) |
| HSL | hsl(260, 41%, 34%) |
| OKLCH | oklch(38.7% 0.118 295.8) |
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 #4B337B | 10.20:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #4B337B | 2.05:1 | Fails | Lc 10.5 | Not readable |
| #4B337B text on white | 10.20:1 | AAA | Lc 93.4 | Preferred for body text |
| #4B337B text on black | 2.05:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE7FA
oklch(93.7% 0.026 295.5)
-
Step 200
200
#DBD3F7
oklch(88.5% 0.05 295.5)
-
Step 300
300
#C5B5F4
oklch(80.8% 0.089 296)
-
Step 400
400
#A98DEE
oklch(70.8% 0.14 295.9)
-
Step 500
500
#956DE8
oklch(63.2% 0.179 295.9)
-
Step 600
600
#8050D7
oklch(55.5% 0.197 295.6)
-
Step 700
700
#6D40BA
oklch(49.1% 0.182 295.9)
-
Step 800
800
#583697
oklch(42.7% 0.151 295.4)
-
Step 900
900 (this color)
#4B337B
oklch(38.7% 0.118 295.8)
-
Step 950
950
#2A1D46
oklch(27% 0.074 295.6)
#4B337B 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) | #10427D | 0.080 |
| Deuteranopia (no green cones) | #184079 | 0.075 |
| Tritanopia (no blue cones) | #3F4252 | 0.092 |
| Achromatopsia (no color) | #414141 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B337B
#4B337B
oklch(38.7% 0.118 295.8)
- #424900
#424900
oklch(38.6% 0.088 115.8)
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 #4B337B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.054
- Rebecca Purple #663399 ΔE 0.070
- Indigo #4B0082 ΔE 0.080
- Cobalt #1E488F ΔE 0.080
- Twilight #4E518B ΔE 0.082
- Twilight Blue #0A437A ΔE 0.084
- Royal Purple #4B006E ΔE 0.088
Use #4B337B 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.