#4B3A78
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.102 293.9), rgb(75, 58, 120).
Aa
White text reads best on this color (9.65:1).
About this color
#4B3A78 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.102 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.65:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #4B3A78 |
| RGB | rgb(75, 58, 120) |
| HSL | hsl(256, 35%, 35%) |
| OKLCH | oklch(39.8% 0.102 293.9) |
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 #4B3A78 | 9.65:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #4B3A78 | 2.17:1 | Fails | Lc 11.8 | Not readable |
| #4B3A78 text on white | 9.65:1 | AAA | Lc 92.2 | Preferred for body text |
| #4B3A78 text on black | 2.17:1 | Fails | Lc -10.2 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C3B8EE
oklch(81% 0.076 294)
-
Step 400
400
#A591E5
oklch(70.7% 0.122 294)
-
Step 500
500
#9073DE
oklch(63.1% 0.157 293.9)
-
Step 600
600
#7B59CB
oklch(55.6% 0.17 293.9)
-
Step 700
700
#6848B0
oklch(49.1% 0.159 293.9)
-
Step 800
800
#553C8E
oklch(42.7% 0.13 294.3)
-
Step 900
900 (this color)
#4B3A78
oklch(39.8% 0.102 293.9)
-
Step 950
950
#291F43
oklch(27.1% 0.065 294.4)
#4B3A78 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) | #23457A | 0.060 |
| Deuteranopia (no green cones) | #264477 | 0.058 |
| Tritanopia (no blue cones) | #404653 | 0.082 |
| Achromatopsia (no color) | #454545 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3A78
#4B3A78
oklch(39.8% 0.102 293.9)
- #474C00
#474C00
oklch(39.8% 0.09 114)
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 #4B3A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Blueberry #464196 ΔE 0.051
- Twilight #4E518B ΔE 0.067
- Cobalt #1E488F ΔE 0.072
- Dusk #4E5481 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.075
- Twilight Blue #0A437A ΔE 0.076
- Dusk Blue #26538D ΔE 0.081
Use #4B3A78 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.