#4A3778
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.107 294.4), rgb(74, 55, 120).
Aa
White text reads best on this color (9.95:1).
About this color
#4A3778 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.107 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 0.034 away. White text reads best on it, at 9.95:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.95:1 |
Values
| HEX | #4A3778 |
| RGB | rgb(74, 55, 120) |
| HSL | hsl(258, 37%, 34%) |
| OKLCH | oklch(39.1% 0.107 294.4) |
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 #4A3778 | 9.95:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #4A3778 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #4A3778 text on white | 9.95:1 | AAA | Lc 92.9 | Preferred for body text |
| #4A3778 text on black | 2.10:1 | Fails | Lc -9.6 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F4
oklch(88.5% 0.044 294.1)
-
Step 300
300
#C3B7F0
oklch(80.9% 0.08 294.2)
-
Step 400
400
#A690E8
oklch(70.8% 0.127 294.4)
-
Step 500
500
#9171E1
oklch(63% 0.164 294.4)
-
Step 600
600
#7D57CF
oklch(55.7% 0.178 294.5)
-
Step 700
700
#6946B3
oklch(49.1% 0.165 294.3)
-
Step 800
800
#563A91
oklch(42.7% 0.138 294.7)
-
Step 900
900 (this color)
#4A3778
oklch(39.1% 0.107 294.4)
-
Step 950
950
#291E44
oklch(26.9% 0.069 294.7)
#4A3778 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) | #1D437A | 0.066 |
| Deuteranopia (no green cones) | #214276 | 0.063 |
| Tritanopia (no blue cones) | #3F4452 | 0.085 |
| Achromatopsia (no color) | #434343 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A3778
#4A3778
oklch(39.1% 0.107 294.4)
- #454A00
#454A00
oklch(39.1% 0.088 114.1)
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 #4A3778, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.054
- Twilight #4E518B ΔE 0.074
- Cobalt #1E488F ΔE 0.075
- Rebecca Purple #663399 ΔE 0.075
- Twilight Blue #0A437A ΔE 0.077
- Dusk #4E5481 ΔE 0.081
- Light Navy #155084 ΔE 0.086
Use #4A3778 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.