#4C399B
Closest named color: Blueberry (#464196). oklch(42.3% 0.152 286.9), rgb(76, 57, 155).
Aa
White text reads best on this color (8.87:1).
About this color
#4C399B is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.152 and its hue 287°. 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 8.87:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.36:1 |
| White text | 8.87:1 |
Values
| HEX | #4C399B |
| RGB | rgb(76, 57, 155) |
| HSL | hsl(252, 46%, 42%) |
| OKLCH | oklch(42.3% 0.152 286.9) |
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 #4C399B | 8.87:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #4C399B | 2.36:1 | Fails | Lc 14.1 | Not readable |
| #4C399B text on white | 8.87:1 | AAA | Lc 89.9 | Fine for body text |
| #4C399B text on black | 2.36:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
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
#BCB8F8
oklch(80.8% 0.09 287.1)
-
Step 400
400
#9B91F4
oklch(70.7% 0.142 286.8)
-
Step 500
500
#8572F0
oklch(63.1% 0.182 286.9)
-
Step 600
600
#7056DE
oklch(55.4% 0.198 286.8)
-
Step 700
700
#5F45C1
oklch(49.1% 0.184 287.2)
-
Step 800
800 (this color)
#4C399B
oklch(42.3% 0.152 286.9)
-
Step 900
900
#3F337C
oklch(37.6% 0.119 286.7)
-
Step 950
950
#251F49
oklch(27.1% 0.075 286.8)
#4C399B 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 | 0.079 |
| Deuteranopia (no green cones) | #004799 | 0.078 |
| Tritanopia (no blue cones) | #305064 | 0.126 |
| Achromatopsia (no color) | #4A4A4A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C399B
#4C399B
oklch(42.3% 0.152 286.9)
- #545100
#545100
oklch(42.4% 0.091 107.3)
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 #4C399B, 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 0.049
- Sapphire #2138AB ΔE 0.066
- Cobalt #1E488F ΔE 0.070
- Chrysanthemum #560BAD ΔE 0.070
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.071
Use #4C399B 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.