#4B3B82
Closest named color: Dark Slate Blue (#483D8B). oklch(40.7% 0.115 290.8), rgb(75, 59, 130).
Aa
White text reads best on this color (9.34:1).
About this color
#4B3B82 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.115 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 0.016 away. White text reads best on it, at 9.34:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #4B3B82 |
| RGB | rgb(75, 59, 130) |
| HSL | hsl(254, 38%, 37%) |
| OKLCH | oklch(40.7% 0.115 290.8) |
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 #4B3B82 | 9.34:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #4B3B82 | 2.24:1 | Fails | Lc 12.6 | Not readable |
| #4B3B82 text on white | 9.34:1 | AAA | Lc 91.4 | Preferred for body text |
| #4B3B82 text on black | 2.24:1 | Fails | Lc -11.0 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#C0BAE9
oklch(81% 0.066 290.7)
-
Step 400
400
#A094DF
oklch(70.6% 0.109 290.7)
-
Step 500
500
#8A78D6
oklch(63% 0.139 290.7)
-
Step 600
600
#755FC3
oklch(55.5% 0.15 290.8)
-
Step 700
700
#634EA8
oklch(49.1% 0.139 291.2)
-
Step 800
800 (this color)
#4B3B82
oklch(40.7% 0.115 290.8)
-
Step 900
900
#42376D
oklch(37.6% 0.09 290.8)
-
Step 950
950
#272140
oklch(27.1% 0.057 291)
#4B3B82 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) | #1B4884 | 0.066 |
| Deuteranopia (no green cones) | #1D4580 | 0.064 |
| Tritanopia (no blue cones) | #3C4A58 | 0.095 |
| Achromatopsia (no color) | #474747 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3B82
#4B3B82
oklch(40.7% 0.115 290.8)
- #4C4D00
#4C4D00
oklch(40.6% 0.089 110.6)
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 #4B3B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.016
- Blueberry #464196 ΔE 0.035
- Twilight #4E518B ΔE 0.060
- Rebecca Purple #663399 ΔE 0.064
- Cobalt #1E488F ΔE 0.065
- Dusk #4E5481 ΔE 0.071
- Dusk Blue #26538D ΔE 0.075
- Twilight Blue #0A437A ΔE 0.077
Use #4B3B82 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.