#4C3684
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.126 292.8), rgb(76, 54, 132).
Aa
White text reads best on this color (9.68:1).
About this color
#4C3684 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.126 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.020 away. White text reads best on it, at 9.68:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.16:1 |
| White text | 9.68:1 |
Values
| HEX | #4C3684 |
| RGB | rgb(76, 54, 132) |
| HSL | hsl(257, 42%, 36%) |
| OKLCH | oklch(40% 0.126 292.8) |
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 #4C3684 | 9.68:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #4C3684 | 2.16:1 | Fails | Lc 11.8 | Not readable |
| #4C3684 text on white | 9.68:1 | AAA | Lc 92.1 | Preferred for body text |
| #4C3684 text on black | 2.16:1 | Fails | Lc -10.3 | 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 900.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3F9
oklch(88.4% 0.052 293.7)
-
Step 300
300
#C2B6F9
oklch(81% 0.094 292.4)
-
Step 400
400
#A58CF5
oklch(70.6% 0.151 293.1)
-
Step 500
500
#916CF1
oklch(63.2% 0.192 292.9)
-
Step 600
600
#7C4FE0
oklch(55.7% 0.209 292.6)
-
Step 700
700
#693EC2
oklch(49.1% 0.194 292.8)
-
Step 800
800
#56349D
oklch(42.7% 0.162 293.2)
-
Step 900
900 (this color)
#4C3684
oklch(40% 0.126 292.8)
-
Step 950
950
#291D49
oklch(27.1% 0.079 293)
#4C3684 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) | #084587 | 0.081 |
| Deuteranopia (no green cones) | #114382 | 0.077 |
| Tritanopia (no blue cones) | #3D4757 | 0.102 |
| Achromatopsia (no color) | #444444 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C3684
#4C3684
oklch(40% 0.126 292.8)
- #494C00
#494C00
oklch(40% 0.089 112.4)
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 #4C3684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.020
- Blueberry #464196 ΔE 0.039
- Rebecca Purple #663399 ΔE 0.059
- Twilight #4E518B ΔE 0.072
- Cobalt #1E488F ΔE 0.072
- Dusk #4E5481 ΔE 0.084
- Twilight Blue #0A437A ΔE 0.084
- Indigo #4B0082 ΔE 0.085
Use #4C3684 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.