#4B377D
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.114 293.7), rgb(75, 55, 125).
Aa
White text reads best on this color (9.80:1).
About this color
#4B377D is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.114 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 0.027 away. White text reads best on it, at 9.80:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #4B377D |
| RGB | rgb(75, 55, 125) |
| HSL | hsl(257, 39%, 35%) |
| OKLCH | oklch(39.6% 0.114 293.7) |
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 #4B377D | 9.80:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #4B377D | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #4B377D text on white | 9.80:1 | AAA | Lc 92.5 | Preferred for body text |
| #4B377D text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C3B6F3
oklch(80.8% 0.086 294.2)
-
Step 400
400
#A58EED
oklch(70.6% 0.137 293.7)
-
Step 500
500
#916FE7
oklch(63.1% 0.175 293.9)
-
Step 600
600
#7C54D5
oklch(55.6% 0.189 293.6)
-
Step 700
700
#6943B9
oklch(49.1% 0.177 293.7)
-
Step 800
800
#553896
oklch(42.6% 0.147 293.4)
-
Step 900
900 (this color)
#4B377D
oklch(39.6% 0.114 293.7)
-
Step 950
950
#291E46
oklch(27.1% 0.072 293.7)
#4B377D 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) | #18447F | 0.071 |
| Deuteranopia (no green cones) | #1D427B | 0.067 |
| Tritanopia (no blue cones) | #3E4554 | 0.091 |
| Achromatopsia (no color) | #444444 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B377D
#4B377D
oklch(39.6% 0.114 293.7)
- #474B00
#474B00
oklch(39.6% 0.088 113.2)
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 #4B377D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.027
- Blueberry #464196 ΔE 0.047
- Rebecca Purple #663399 ΔE 0.068
- Twilight #4E518B ΔE 0.072
- Cobalt #1E488F ΔE 0.073
- Twilight Blue #0A437A ΔE 0.079
- Dusk #4E5481 ΔE 0.081
- Dusk Blue #26538D ΔE 0.085
Use #4B377D 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.