#4E3787
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.128 293.1), rgb(78, 55, 135).
Aa
White text reads best on this color (9.45:1).
About this color
#4E3787 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.128 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 0.018 away. White text reads best on it, at 9.45:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.22:1 |
| White text | 9.45:1 |
Values
| HEX | #4E3787 |
| RGB | rgb(78, 55, 135) |
| HSL | hsl(257, 42%, 37%) |
| OKLCH | oklch(40.6% 0.128 293.1) |
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 #4E3787 | 9.45:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #4E3787 | 2.22:1 | Fails | Lc 12.4 | Not readable |
| #4E3787 text on white | 9.45:1 | AAA | Lc 91.6 | Preferred for body text |
| #4E3787 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F7
oklch(93.5% 0.022 294.6)
-
Step 200
200
#DAD5F3
oklch(88.6% 0.041 293.2)
-
Step 300
300
#C2B8ED
oklch(80.9% 0.075 293.3)
-
Step 400
400
#A492E4
oklch(70.8% 0.119 293.2)
-
Step 500
500
#8E74DD
oklch(63% 0.154 292.8)
-
Step 600
600
#7A5ACA
oklch(55.6% 0.167 293.4)
-
Step 700
700
#6749AF
oklch(49.1% 0.156 293.4)
-
Step 800
800 (this color)
#4E3787
oklch(40.6% 0.128 293.1)
-
Step 900
900
#453571
oklch(37.8% 0.1 293.3)
-
Step 950
950
#281F42
oklch(26.9% 0.064 293.5)
#4E3787 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) | #07478A | 0.083 |
| Deuteranopia (no green cones) | #114485 | 0.079 |
| Tritanopia (no blue cones) | #3F4859 | 0.103 |
| Achromatopsia (no color) | #464646 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E3787
#4E3787
oklch(40.6% 0.128 293.1)
- #4A4E00
#4A4E00
oklch(40.6% 0.091 113.1)
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 #4E3787, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.018
- Blueberry #464196 ΔE 0.035
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.069
- Cobalt #1E488F ΔE 0.072
- Dusk #4E5481 ΔE 0.082
- Dusk Blue #26538D ΔE 0.085
- Imperial Purple #480CA8 ΔE 0.086
Use #4E3787 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.