#4B3087
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.138 293.2), rgb(75, 48, 135).
Aa
White text reads best on this color (10.13:1).
About this color
#4B3087 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.138 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.031 away. White text reads best on it, at 10.13:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.07:1 |
| White text | 10.13:1 |
Values
| HEX | #4B3087 |
| RGB | rgb(75, 48, 135) |
| HSL | hsl(259, 48%, 36%) |
| OKLCH | oklch(39.1% 0.138 293.2) |
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 #4B3087 | 10.13:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #4B3087 | 2.07:1 | Fails | Lc 10.8 | Not readable |
| #4B3087 text on white | 10.13:1 | AAA | Lc 93.1 | Preferred for body text |
| #4B3087 text on black | 2.07:1 | Fails | Lc -9.4 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#DAD3FD
oklch(88.6% 0.058 292.8)
-
Step 300
300
#C3B4FE
oklch(80.9% 0.104 293.2)
-
Step 400
400
#A689FD
oklch(70.6% 0.166 293.2)
-
Step 500
500
#9366FB
oklch(63.1% 0.212 293.3)
-
Step 600
600
#7F46EA
oklch(55.5% 0.231 293.3)
-
Step 700
700
#6C36CC
oklch(49.2% 0.215 293.3)
-
Step 800
800
#572EA5
oklch(42.6% 0.179 293)
-
Step 900
900 (this color)
#4B3087
oklch(39.1% 0.138 293.2)
-
Step 950
950
#291B4C
oklch(27% 0.087 292.8)
#4B3087 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) | #00438A | 0.087 |
| Deuteranopia (no green cones) | #004085 | 0.087 |
| Tritanopia (no blue cones) | #3A4457 | 0.110 |
| Achromatopsia (no color) | #414141 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3087
#4B3087
oklch(39.1% 0.138 293.2)
- #464A00
#464A00
oklch(39.2% 0.088 113.3)
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 #4B3087, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Blueberry #464196 ΔE 0.046
- Rebecca Purple #663399 ΔE 0.060
- Indigo #4B0082 ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.077
- Cobalt #1E488F ΔE 0.079
- Sapphire #2138AB ΔE 0.085
Use #4B3087 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.