#4A3777
Closest named color: Dark Slate Blue (#483D8B). oklch(39.1% 0.105 294.7), rgb(74, 55, 119).
Aa
White text reads best on this color (9.98:1).
About this color
#4A3777 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.105 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 9.98:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #4A3777 |
| RGB | rgb(74, 55, 119) |
| HSL | hsl(258, 37%, 34%) |
| OKLCH | oklch(39.1% 0.105 294.7) |
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 #4A3777 | 9.98:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #4A3777 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #4A3777 text on white | 9.98:1 | AAA | Lc 93.0 | Preferred for body text |
| #4A3777 text on black | 2.10:1 | Fails | Lc -9.5 | 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
#C3B7EF
oklch(80.8% 0.079 294.4)
-
Step 400
400
#A690E7
oklch(70.7% 0.126 294.6)
-
Step 500
500
#9272E0
oklch(63.2% 0.161 294.8)
-
Step 600
600
#7D57CD
oklch(55.6% 0.175 294.9)
-
Step 700
700
#6A46B2
oklch(49.1% 0.164 295)
-
Step 800
800
#563B90
oklch(42.8% 0.135 294.7)
-
Step 900
900 (this color)
#4A3777
oklch(39.1% 0.105 294.7)
-
Step 950
950
#291F43
oklch(27.1% 0.065 294.4)
#4A3777 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) | #1E4379 | 0.065 |
| Deuteranopia (no green cones) | #224176 | 0.061 |
| Tritanopia (no blue cones) | #3F4451 | 0.085 |
| Achromatopsia (no color) | #424242 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A3777
#4A3777
oklch(39.1% 0.105 294.7)
- #444A00
#444A00
oklch(39% 0.088 115)
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 #4A3777, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.055
- Twilight #4E518B ΔE 0.075
- Cobalt #1E488F ΔE 0.075
- Rebecca Purple #663399 ΔE 0.076
- Twilight Blue #0A437A ΔE 0.077
- Dusk #4E5481 ΔE 0.081
- Dark Grey Blue #29465B ΔE 0.086
Use #4A3777 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.