#4B399B
Closest named color: Blueberry (#464196). oklch(42.2% 0.152 286.3), rgb(75, 57, 155).
Aa
White text reads best on this color (8.90:1).
About this color
#4B399B is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.152 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.022 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #4B399B |
| RGB | rgb(75, 57, 155) |
| HSL | hsl(251, 46%, 42%) |
| OKLCH | oklch(42.2% 0.152 286.3) |
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 #4B399B | 8.90:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #4B399B | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #4B399B text on white | 8.90:1 | AAA | Lc 90.0 | Fine for body text |
| #4B399B text on black | 2.35:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F4F4FD
oklch(97% 0.012 286.2)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5F9
oklch(88.5% 0.049 286.6)
-
Step 300
300
#BBB9F8
oklch(81% 0.088 285.7)
-
Step 400
400
#9A91F5
oklch(70.6% 0.144 286.2)
-
Step 500
500
#8472F0
oklch(63% 0.182 286.5)
-
Step 600
600
#6F57DF
oklch(55.6% 0.198 286.1)
-
Step 700
700
#5E46C2
oklch(49.2% 0.185 286.4)
-
Step 800
800 (this color)
#4B399B
oklch(42.2% 0.152 286.3)
-
Step 900
900
#3F337C
oklch(37.6% 0.119 286.7)
-
Step 950
950
#241F49
oklch(27% 0.075 285.6)
#4B399B 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) | #004C9E | 0.078 |
| Deuteranopia (no green cones) | #004799 | 0.076 |
| Tritanopia (no blue cones) | #2D5064 | 0.127 |
| Achromatopsia (no color) | #4A4A4A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B399B
#4B399B
oklch(42.2% 0.152 286.3)
- #545000
#545000
oklch(42.2% 0.09 106.4)
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 #4B399B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.022
- Dark Slate Blue #483D8B ΔE 0.029
- Rebecca Purple #663399 ΔE 0.050
- Sapphire #2138AB ΔE 0.065
- Cobalt #1E488F ΔE 0.068
- Chrysanthemum #560BAD ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.070
- Blue With A Hint Of Purple #533CC6 ΔE 0.071
Use #4B399B 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.