#3A315B
Closest named color: Prussian Blue (#1D3557). oklch(34.4% 0.072 292), rgb(58, 49, 91).
Aa
White text reads best on this color (11.86:1).
About this color
#3A315B is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.072 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.045 away. White text reads best on it, at 11.86:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.86:1 |
Values
| HEX | #3A315B |
| RGB | rgb(58, 49, 91) |
| HSL | hsl(253, 30%, 27%) |
| OKLCH | oklch(34.4% 0.072 292) |
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 #3A315B | 11.86:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #3A315B | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #3A315B text on white | 11.86:1 | AAA | Lc 97.1 | Preferred for body text |
| #3A315B text on black | 1.77:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6EC
oklch(88.5% 0.03 292)
-
Step 300
300
#C1BBE1
oklch(80.9% 0.053 292.4)
-
Step 400
400
#A197D3
oklch(70.7% 0.087 291.6)
-
Step 500
500
#8B7CC7
oklch(63% 0.112 292.1)
-
Step 600
600
#7664B3
oklch(55.6% 0.12 292.5)
-
Step 700
700
#63539A
oklch(49.1% 0.111 292.2)
-
Step 800
800
#51447D
oklch(42.7% 0.093 292.5)
-
Step 900
900 (this color)
#3A315B
oklch(34.4% 0.072 292)
-
Step 950
950
#27223B
oklch(27% 0.046 292.2)
#3A315B 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) | #24385D | 0.037 |
| Deuteranopia (no green cones) | #25365A | 0.035 |
| Tritanopia (no blue cones) | #323941 | 0.060 |
| Achromatopsia (no color) | #373737 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A315B
#3A315B
oklch(34.4% 0.072 292)
- #3A3C05
#3A3C05
oklch(34.3% 0.072 111.8)
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 #3A315B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
- Onyx #343A40 ΔE 0.063
- Marine Blue #01386A ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.067
- Marine #042E60 ΔE 0.069
Use #3A315B 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.