#4B2091
Closest named color: Imperial Purple (#480CA8). oklch(37.8% 0.171 293.8), rgb(75, 32, 145).
Aa
White text reads best on this color (10.96:1).
About this color
#4B2091 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.171 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Imperial Purple (#480CA8), ΔE 0.043 away. White text reads best on it, at 10.96:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Imperial Purple (#480CA8) |
| Black text | 1.91:1 |
| White text | 10.96:1 |
Values
| HEX | #4B2091 |
| RGB | rgb(75, 32, 145) |
| HSL | hsl(263, 64%, 35%) |
| OKLCH | oklch(37.8% 0.171 293.8) |
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 #4B2091 | 10.96:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #4B2091 | 1.91:1 | Fails | Lc 9.4 | Not readable |
| #4B2091 text on white | 10.96:1 | AAA | Lc 94.5 | Preferred for body text |
| #4B2091 text on black | 1.91:1 | Fails | Lc -8.1 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EAE6FF
oklch(93.6% 0.034 293.1)
-
Step 200
200
#DBD2FF
oklch(88.5% 0.062 294.3)
-
Step 300
300
#C4B3FF
oklch(80.8% 0.107 294.1)
-
Step 400
400
#A888FF
oklch(70.7% 0.17 294)
-
Step 500
500
#9563FF
oklch(63.2% 0.221 293.9)
-
Step 600
600
#852FFF
oklch(55.7% 0.274 293.9)
-
Step 700
700
#720FE3
oklch(49.1% 0.264 293.9)
-
Step 800
800
#5C17B7
oklch(42.6% 0.219 293.8)
-
Step 900
900 (this color)
#4B2091
oklch(37.8% 0.171 293.8)
-
Step 950
950
#2B1555
oklch(27% 0.109 293.5)
#4B2091 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) | #003E94 | 0.098 |
| Deuteranopia (no green cones) | #003A8F | 0.096 |
| Tritanopia (no blue cones) | #363F57 | 0.133 |
| Achromatopsia (no color) | #3C3C3C | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B2091
#4B2091
oklch(37.8% 0.171 293.8)
- #424600
#424600
oklch(37.8% 0.084 113.4)
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 #4B2091, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Purple #480CA8 ΔE 0.043
- Indigo #4B0082 ΔE 0.047
- Chrysanthemum #560BAD ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.062
- Indigo Blue #3A18B1 ΔE 0.065
- Rebecca Purple #663399 ΔE 0.069
- Blueberry #464196 ΔE 0.070
- Royal Purple #4B006E ΔE 0.075
Use #4B2091 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.