#3F50A2
Closest named color: Blueberry (#464196). oklch(46.2% 0.133 271.5), rgb(63, 80, 162).
Aa
White text reads best on this color (7.29:1).
About this color
#3F50A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.133 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.041 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.88:1 |
| White text | 7.29:1 |
Values
| HEX | #3F50A2 |
| RGB | rgb(63, 80, 162) |
| HSL | hsl(230, 44%, 44%) |
| OKLCH | oklch(46.2% 0.133 271.5) |
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 #3F50A2 | 7.29:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #3F50A2 | 2.88:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #3F50A2 text on white | 7.29:1 | AAA | Lc 85.1 | Fine for body text |
| #3F50A2 text on black | 2.88:1 | Fails | Lc -17.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEB
oklch(80.9% 0.064 271.1)
-
Step 400
400
#899DE1
oklch(70.7% 0.102 271.1)
-
Step 500
500
#6D83D9
oklch(63.1% 0.132 271.4)
-
Step 600
600
#566BC6
oklch(55.6% 0.143 271.3)
-
Step 700
700 (this color)
#3F50A2
oklch(46.2% 0.133 271.5)
-
Step 800
800
#3A498B
oklch(42.8% 0.11 271.4)
-
Step 900
900
#313D6F
oklch(37.6% 0.087 271.5)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#3F50A2 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) | #245BA5 | 0.036 |
| Deuteranopia (no green cones) | #0F52A0 | 0.041 |
| Tritanopia (no blue cones) | #006371 | 0.116 |
| Achromatopsia (no color) | #565656 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F50A2
#3F50A2
oklch(46.2% 0.133 271.5)
- #6C5600
#6C5600
oklch(46.2% 0.095 91.5)
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 #3F50A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.041
- Twilight #4E518B ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.044
- Dusk Blue #26538D ΔE 0.046
- Dusky Blue #475F94 ΔE 0.053
- Cobalt #1E488F ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.058
Use #3F50A2 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.