#4C3783
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.123 292.8), rgb(76, 55, 131).
Aa
White text reads best on this color (9.62:1).
About this color
#4C3783 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.123 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 9.62:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #4C3783 |
| RGB | rgb(76, 55, 131) |
| HSL | hsl(257, 41%, 36%) |
| OKLCH | oklch(40.1% 0.123 292.8) |
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 #4C3783 | 9.62:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #4C3783 | 2.18:1 | Fails | Lc 11.9 | Not readable |
| #4C3783 text on white | 9.62:1 | AAA | Lc 92.0 | Preferred for body text |
| #4C3783 text on black | 2.18:1 | Fails | Lc -10.4 | 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 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
#DAD4F9
oklch(88.6% 0.051 292.8)
-
Step 300
300
#C2B6F7
oklch(80.9% 0.091 292.7)
-
Step 400
400
#A58DF3
oklch(70.7% 0.147 293.1)
-
Step 500
500
#906DEF
oklch(63.1% 0.188 292.6)
-
Step 600
600
#7C50DD
oklch(55.6% 0.204 292.9)
-
Step 700
700
#6940C0
oklch(49.2% 0.189 292.8)
-
Step 800
800
#55369B
oklch(42.7% 0.156 292.7)
-
Step 900
900 (this color)
#4C3783
oklch(40.1% 0.123 292.8)
-
Step 950
950
#291D48
oklch(27% 0.077 293.4)
#4C3783 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) | #0F4686 | 0.078 |
| Deuteranopia (no green cones) | #154381 | 0.074 |
| Tritanopia (no blue cones) | #3D4757 | 0.099 |
| Achromatopsia (no color) | #454545 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C3783
#4C3783
oklch(40.1% 0.123 292.8)
- #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 #4C3783, 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 0.060
- Twilight #4E518B ΔE 0.070
- Cobalt #1E488F ΔE 0.071
- Dusk #4E5481 ΔE 0.081
- Twilight Blue #0A437A ΔE 0.083
- Dusk Blue #26538D ΔE 0.084
Use #4C3783 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.