#4E3981
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.117 294), rgb(78, 57, 129).
Aa
White text reads best on this color (9.43:1).
About this color
#4E3981 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.117 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 0.021 away. White text reads best on it, at 9.43:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.22:1 |
| White text | 9.43:1 |
Values
| HEX | #4E3981 |
| RGB | rgb(78, 57, 129) |
| HSL | hsl(258, 39%, 36%) |
| OKLCH | oklch(40.6% 0.117 294) |
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 #4E3981 | 9.43:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #4E3981 | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #4E3981 text on white | 9.43:1 | AAA | Lc 91.6 | Preferred for body text |
| #4E3981 text on black | 2.22:1 | Fails | Lc -10.8 | 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
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F0
oklch(88.5% 0.037 294.1)
-
Step 300
300
#C2B9E9
oklch(80.9% 0.068 293.4)
-
Step 400
400
#A493DE
oklch(70.7% 0.109 293.8)
-
Step 500
500
#8F76D5
oklch(63% 0.14 294.1)
-
Step 600
600
#7A5DC2
oklch(55.6% 0.152 294.1)
-
Step 700
700
#674CA7
oklch(49% 0.141 294.3)
-
Step 800
800 (this color)
#4E3981
oklch(40.6% 0.117 294)
-
Step 900
900
#45366D
oklch(37.7% 0.092 294.1)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#4E3981 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) | #194783 | 0.074 |
| Deuteranopia (no green cones) | #1E457F | 0.070 |
| Tritanopia (no blue cones) | #414857 | 0.094 |
| Achromatopsia (no color) | #464646 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E3981
#4E3981
oklch(40.6% 0.117 294)
- #494E00
#494E00
oklch(40.5% 0.091 113.9)
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 #4E3981, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.021
- Blueberry #464196 ΔE 0.040
- Rebecca Purple #663399 ΔE 0.060
- Twilight #4E518B ΔE 0.064
- Cobalt #1E488F ΔE 0.072
- Dusk #4E5481 ΔE 0.075
- Dusk Blue #26538D ΔE 0.082
- Twilight Blue #0A437A ΔE 0.083
Use #4E3981 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.