#4C3390
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.146 290.8), rgb(76, 51, 144).
Aa
White text reads best on this color (9.61:1).
About this color
#4C3390 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.146 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 0.026 away. White text reads best on it, at 9.61:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #4C3390 |
| RGB | rgb(76, 51, 144) |
| HSL | hsl(256, 48%, 38%) |
| OKLCH | oklch(40.5% 0.146 290.8) |
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 #4C3390 | 9.61:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #4C3390 | 2.18:1 | Fails | Lc 12.1 | Not readable |
| #4C3390 text on white | 9.61:1 | AAA | Lc 91.8 | Preferred for body text |
| #4C3390 text on black | 2.18:1 | Fails | Lc -10.5 | 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
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F7
oklch(88.4% 0.048 290.6)
-
Step 300
300
#C0B7F4
oklch(80.8% 0.086 291.1)
-
Step 400
400
#A190EF
oklch(70.7% 0.137 290.7)
-
Step 500
500
#8C71E9
oklch(63.1% 0.174 290.9)
-
Step 600
600
#7756D8
oklch(55.6% 0.19 290.6)
-
Step 700
700
#6545BB
oklch(49.1% 0.177 290.9)
-
Step 800
800 (this color)
#4C3390
oklch(40.5% 0.146 290.8)
-
Step 900
900
#433378
oklch(37.7% 0.113 290.6)
-
Step 950
950
#271E46
oklch(26.9% 0.072 291.1)
#4C3390 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) | #004693 | 0.085 |
| Deuteranopia (no green cones) | #00438E | 0.084 |
| Tritanopia (no blue cones) | #37495C | 0.119 |
| Achromatopsia (no color) | #454545 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C3390
#4C3390
oklch(40.5% 0.146 290.8)
- #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 #4C3390, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.026
- Blueberry #464196 ΔE 0.034
- Rebecca Purple #663399 ΔE 0.051
- Imperial Purple #480CA8 ΔE 0.068
- Chrysanthemum #560BAD ΔE 0.070
- Cobalt #1E488F ΔE 0.075
- Sapphire #2138AB ΔE 0.076
- Indigo Blue #3A18B1 ΔE 0.078
Use #4C3390 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.