#3A2775
Closest named color: Indigo (#4B0082). oklch(34.4% 0.127 289.2), rgb(58, 39, 117).
Aa
White text reads best on this color (12.15:1).
About this color
#3A2775 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.127 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.062 away. White text reads best on it, at 12.15:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.72:1 |
| White text | 12.15:1 |
Values
| HEX | #3A2775 |
| RGB | rgb(58, 39, 117) |
| HSL | hsl(255, 50%, 31%) |
| OKLCH | oklch(34.4% 0.127 289.2) |
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 #3A2775 | 12.15:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #3A2775 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #3A2775 text on white | 12.15:1 | AAA | Lc 97.3 | Preferred for body text |
| #3A2775 text on black | 1.72:1 | Fails | Lc 0.0 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D7D4FB
oklch(88.5% 0.053 288.8)
-
Step 300
300
#BEB7FB
oklch(80.9% 0.095 288.8)
-
Step 400
400
#9F8EF9
oklch(70.7% 0.153 289.2)
-
Step 500
500
#8A6EF5
oklch(63.2% 0.194 289.2)
-
Step 600
600
#7651E4
oklch(55.7% 0.211 289.3)
-
Step 700
700
#6340C6
oklch(49.1% 0.197 289.1)
-
Step 800
800
#5136A0
oklch(42.7% 0.163 289.4)
-
Step 900
900 (this color)
#3A2775
oklch(34.4% 0.127 289.2)
-
Step 950
950
#261D4A
oklch(26.9% 0.08 289)
#3A2775 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) | #003777 | 0.070 |
| Deuteranopia (no green cones) | #003473 | 0.069 |
| Tritanopia (no blue cones) | #263A4A | 0.104 |
| Achromatopsia (no color) | #363636 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A2775
#3A2775
oklch(34.4% 0.127 289.2)
- #3C3C00
#3C3C00
oklch(34.5% 0.075 109.8)
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 #3A2775, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.062
- Royal Purple #4B006E ΔE 0.066
- Midnight Blue #191970 ΔE 0.070
- Dark Slate Blue #483D8B ΔE 0.071
- Marine Blue #01386A ΔE 0.076
- Marine #042E60 ΔE 0.079
- Prussian Blue #1D3557 ΔE 0.080
- Twilight Blue #0A437A ΔE 0.084
Use #3A2775 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.