#4B338B
Closest named color: Dark Slate Blue (#483D8B). oklch(39.9% 0.139 291.3), rgb(75, 51, 139).
Aa
White text reads best on this color (9.78:1).
About this color
#4B338B is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.139 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.024 away. White text reads best on it, at 9.78:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #4B338B |
| RGB | rgb(75, 51, 139) |
| HSL | hsl(256, 46%, 37%) |
| OKLCH | oklch(39.9% 0.139 291.3) |
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 #4B338B | 9.78:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #4B338B | 2.14:1 | Fails | Lc 11.6 | Not readable |
| #4B338B text on white | 9.78:1 | AAA | Lc 92.3 | Preferred for body text |
| #4B338B text on black | 2.14:1 | Fails | Lc -10.1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D9D3FD
oklch(88.5% 0.058 291.7)
-
Step 300
300
#C1B5FF
oklch(81% 0.104 291.3)
-
Step 400
400
#A38AFF
oklch(70.7% 0.167 291.4)
-
Step 500
500
#8F67FE
oklch(63.1% 0.214 291.2)
-
Step 600
600
#7B47ED
oklch(55.5% 0.233 291.2)
-
Step 700
700
#6937CE
oklch(49.2% 0.216 291.5)
-
Step 800
800
#552FA6
oklch(42.6% 0.179 291.6)
-
Step 900
900 (this color)
#4B338B
oklch(39.9% 0.139 291.3)
-
Step 950
950
#281B4D
oklch(26.9% 0.088 291.3)
#4B338B 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) | #00458E | 0.084 |
| Deuteranopia (no green cones) | #004289 | 0.084 |
| Tritanopia (no blue cones) | #38475A | 0.112 |
| Achromatopsia (no color) | #444444 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B338B
#4B338B
oklch(39.9% 0.139 291.3)
- #4A4B00
#4A4B00
oklch(39.9% 0.087 110.6)
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 #4B338B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.024
- Blueberry #464196 ΔE 0.037
- Rebecca Purple #663399 ΔE 0.055
- Imperial Purple #480CA8 ΔE 0.073
- Cobalt #1E488F ΔE 0.074
- Chrysanthemum #560BAD ΔE 0.076
- Indigo #4B0082 ΔE 0.078
- Twilight #4E518B ΔE 0.079
Use #4B338B 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.