#3A396F
Closest named color: Dark Slate Blue (#483D8B). oklch(37.4% 0.091 281.9), rgb(58, 57, 111).
Aa
White text reads best on this color (10.52:1).
About this color
#3A396F is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.091 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 10.52:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.99:1 |
| White text | 10.52:1 |
Values
| HEX | #3A396F |
| RGB | rgb(58, 57, 111) |
| HSL | hsl(241, 32%, 33%) |
| OKLCH | oklch(37.4% 0.091 281.9) |
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 #3A396F | 10.52:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #3A396F | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #3A396F text on white | 10.52:1 | AAA | Lc 94.3 | Preferred for body text |
| #3A396F text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F2
oklch(88.5% 0.037 280.6)
-
Step 300
300
#B9BCEC
oklch(80.9% 0.068 282)
-
Step 400
400
#9698E3
oklch(70.8% 0.109 282.1)
-
Step 500
500
#7D7DDB
oklch(63.2% 0.139 281.7)
-
Step 600
600
#6864C8
oklch(55.7% 0.151 282.1)
-
Step 700
700
#5652AD
oklch(49% 0.141 281.8)
-
Step 800
800
#46448C
oklch(42.7% 0.116 281.5)
-
Step 900
900 (this color)
#3A396F
oklch(37.4% 0.091 281.9)
-
Step 950
950
#222242
oklch(27% 0.059 281.7)
#3A396F 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) | #234171 | 0.036 |
| Deuteranopia (no green cones) | #203D6E | 0.036 |
| Tritanopia (no blue cones) | #28444E | 0.078 |
| Achromatopsia (no color) | #3F3F3F | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A396F
#3A396F
oklch(37.4% 0.091 281.9)
- #494200
#494200
oklch(37.4% 0.079 102.7)
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 #3A396F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Twilight Blue #0A437A ΔE 0.053
- Marine Blue #01386A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.062
- Cobalt #1E488F ΔE 0.067
- Blueberry #464196 ΔE 0.070
- Light Navy #155084 ΔE 0.074
Use #3A396F 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.