#3A3155
Closest named color: Prussian Blue (#1D3557). oklch(34% 0.063 294.3), rgb(58, 49, 85).
Aa
White text reads best on this color (11.99:1).
About this color
#3A3155 is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.063 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.044 away. White text reads best on it, at 11.99:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.75:1 |
| White text | 11.99:1 |
Values
| HEX | #3A3155 |
| RGB | rgb(58, 49, 85) |
| HSL | hsl(255, 27%, 26%) |
| OKLCH | oklch(34% 0.063 294.3) |
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 #3A3155 | 11.99:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #3A3155 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #3A3155 text on white | 11.99:1 | AAA | Lc 97.4 | Preferred for body text |
| #3A3155 text on black | 1.75:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E9
oklch(88.5% 0.026 295.5)
-
Step 300
300
#C2BBDD
oklch(80.9% 0.048 294.7)
-
Step 400
400
#A398CB
oklch(70.7% 0.074 294.3)
-
Step 500
500
#8D7EBE
oklch(63.2% 0.096 294.3)
-
Step 600
600
#7766AA
oklch(55.5% 0.105 294.2)
-
Step 700
700
#645592
oklch(49.1% 0.096 293.9)
-
Step 800
800
#524576
oklch(42.6% 0.081 295)
-
Step 900
900 (this color)
#3A3155
oklch(34% 0.063 294.3)
-
Step 950
950
#282338
oklch(27.2% 0.039 294.6)
#3A3155 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) | #273756 | 0.033 |
| Deuteranopia (no green cones) | #283654 | 0.032 |
| Tritanopia (no blue cones) | #34373F | 0.050 |
| Achromatopsia (no color) | #363636 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3155
#3A3155
oklch(34% 0.063 294.3)
- #373B11
#373B11
oklch(33.8% 0.062 114.3)
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 #3A3155, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.045
- Gunmetal #293241 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.053
- Onyx #343A40 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.066
- Marine Blue #01386A ΔE 0.069
- Midnight Green #073B4C ΔE 0.069
Use #3A3155 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.