#4B3278
Closest named color: Dark Slate Blue (#483D8B). oklch(38.3% 0.115 297.1), rgb(75, 50, 120).
Aa
White text reads best on this color (10.36:1).
About this color
#4B3278 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.115 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 0.040 away. White text reads best on it, at 10.36:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.02:1 |
| White text | 10.36:1 |
Values
| HEX | #4B3278 |
| RGB | rgb(75, 50, 120) |
| HSL | hsl(261, 41%, 33%) |
| OKLCH | oklch(38.3% 0.115 297.1) |
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 #4B3278 | 10.36:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #4B3278 | 2.02:1 | Fails | Lc 10.1 | Not readable |
| #4B3278 text on white | 10.36:1 | AAA | Lc 93.8 | Preferred for body text |
| #4B3278 text on black | 2.02:1 | Fails | Lc -8.8 | 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
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DCD3F6
oklch(88.5% 0.049 297.2)
-
Step 300
300
#C6B5F2
oklch(80.8% 0.087 297.2)
-
Step 400
400
#AA8DEC
oklch(70.8% 0.138 296.8)
-
Step 500
500
#976DE5
oklch(63.2% 0.176 297.3)
-
Step 600
600
#8251D3
oklch(55.6% 0.191 297.1)
-
Step 700
700
#6E40B7
oklch(49% 0.179 297.1)
-
Step 800
800
#5A3694
oklch(42.7% 0.148 297.4)
-
Step 900
900 (this color)
#4B3278
oklch(38.3% 0.115 297.1)
-
Step 950
950
#2B1D45
oklch(27% 0.073 297.5)
#4B3278 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) | #11407A | 0.080 |
| Deuteranopia (no green cones) | #1A3F76 | 0.074 |
| Tritanopia (no blue cones) | #414050 | 0.089 |
| Achromatopsia (no color) | #404040 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3278
#4B3278
oklch(38.3% 0.115 297.1)
- #404900
#404900
oklch(38.4% 0.089 117.5)
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 #4B3278, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.040
- Blueberry #464196 ΔE 0.059
- Rebecca Purple #663399 ΔE 0.074
- Indigo #4B0082 ΔE 0.079
- Cobalt #1E488F ΔE 0.083
- Royal Purple #4B006E ΔE 0.085
- Twilight Blue #0A437A ΔE 0.085
- Twilight #4E518B ΔE 0.085
Use #4B3278 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.