#4B2B81
Closest named color: Dark Slate Blue (#483D8B). oklch(37.9% 0.138 296.3), rgb(75, 43, 129).
Aa
White text reads best on this color (10.70:1).
About this color
#4B2B81 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.138 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 0.045 away. White text reads best on it, at 10.70:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.96:1 |
| White text | 10.70:1 |
Values
| HEX | #4B2B81 |
| RGB | rgb(75, 43, 129) |
| HSL | hsl(262, 50%, 34%) |
| OKLCH | oklch(37.9% 0.138 296.3) |
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 #4B2B81 | 10.70:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #4B2B81 | 1.96:1 | Fails | Lc 9.6 | Not readable |
| #4B2B81 text on white | 10.70:1 | AAA | Lc 94.3 | Preferred for body text |
| #4B2B81 text on black | 1.96:1 | Fails | Lc -8.2 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FC
oklch(93.5% 0.03 296.2)
-
Step 200
200
#DCD2FC
oklch(88.5% 0.058 296.1)
-
Step 300
300
#C7B3FC
oklch(80.9% 0.103 296.6)
-
Step 400
400
#AB87FA
oklch(70.6% 0.166 296.3)
-
Step 500
500
#9964F8
oklch(63.2% 0.212 296.3)
-
Step 600
600
#8544E6
oklch(55.6% 0.229 296.5)
-
Step 700
700
#7133C8
oklch(49% 0.214 296.5)
-
Step 800
800
#5C2DA2
oklch(42.8% 0.177 296.5)
-
Step 900
900 (this color)
#4B2B81
oklch(37.9% 0.138 296.3)
-
Step 950
950
#2B1A4B
oklch(26.9% 0.087 296)
#4B2B81 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) | #003E84 | 0.092 |
| Deuteranopia (no green cones) | #003D7F | 0.092 |
| Tritanopia (no blue cones) | #3D3F52 | 0.107 |
| Achromatopsia (no color) | #3E3E3E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B2B81
#4B2B81
oklch(37.9% 0.138 296.3)
- #404700
#404700
oklch(37.8% 0.086 116)
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 #4B2B81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Indigo #4B0082 ΔE 0.059
- Blueberry #464196 ΔE 0.061
- Rebecca Purple #663399 ΔE 0.068
- Royal Purple #4B006E ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.075
- Chrysanthemum #560BAD ΔE 0.081
- Cobalt #1E488F ΔE 0.090
Use #4B2B81 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.