#4B2B71
Closest named color: Dark Slate Blue (#483D8B). oklch(36.6% 0.117 302), rgb(75, 43, 113).
Aa
White text reads best on this color (11.15:1).
About this color
#4B2B71 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.117 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.059 away. White text reads best on it, at 11.15:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.88:1 |
| White text | 11.15:1 |
Values
| HEX | #4B2B71 |
| RGB | rgb(75, 43, 113) |
| HSL | hsl(267, 45%, 31%) |
| OKLCH | oklch(36.6% 0.117 302) |
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 #4B2B71 | 11.15:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #4B2B71 | 1.88:1 | Fails | Lc 8.5 | Not readable |
| #4B2B71 text on white | 11.15:1 | AAA | Lc 95.4 | Preferred for body text |
| #4B2B71 text on black | 1.88:1 | Fails | Lc 0.0 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F8
oklch(93.6% 0.025 303.5)
-
Step 200
200
#DFD2F5
oklch(88.5% 0.049 302.3)
-
Step 300
300
#CBB4F0
oklch(81% 0.087 302)
-
Step 400
400
#B18AE9
oklch(70.7% 0.14 301.9)
-
Step 500
500
#9F69E2
oklch(63.1% 0.179 302.1)
-
Step 600
600
#8A4CD0
oklch(55.5% 0.196 302)
-
Step 700
700
#753CB4
oklch(49% 0.182 301.8)
-
Step 800
800
#5F3392
oklch(42.7% 0.151 301.6)
-
Step 900
900 (this color)
#4B2B71
oklch(36.6% 0.117 302)
-
Step 950
950
#2D1C44
oklch(27% 0.073 301.3)
#4B2B71 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) | #083B73 | 0.091 |
| Deuteranopia (no green cones) | #183B6F | 0.083 |
| Tritanopia (no blue cones) | #433949 | 0.088 |
| Achromatopsia (no color) | #3B3B3B | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B2B71
#4B2B71
oklch(36.6% 0.117 302)
- #374500
#374500
oklch(36.5% 0.088 121.8)
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 #4B2B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.059
- Royal Purple #4B006E ΔE 0.067
- Indigo #4B0082 ΔE 0.068
- Grape Purple #5D1451 ΔE 0.075
- Blueberry #464196 ΔE 0.078
- Plum Purple #4E0550 ΔE 0.085
- Rebecca Purple #663399 ΔE 0.086
- Prussian Blue #1D3557 ΔE 0.092
Use #4B2B71 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.