#3F48AA#3F48AA

#3F48AA is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.2% C 0.155 H 274.4°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F48AA
RGB	rgb(63, 72, 170)
HSL	hsl(235, 46%, 46%)
HSV	hsv(235, 63%, 67%)
CMYK	cmyk(62.9%, 57.6%, 0%, 33.3%)
CIE-LAB	lab(35.19, 27.52, -53.86)
CIE-LCH	lch(35.19, 60.49, 297.07°)
OKLab	oklab(45.21% 0.0119 -0.1548)
OKLCH	oklch(45.21% 0.155 274.4)
XYZ	xyz(11.6206, 8.5928, 39.0686)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F48AA #AAA13F

analogous

#3F7DAA #3F48AA #6B3FAA

triadic

#3F48AA #AA3F48 #48AA3F

tetradic

#3F48AA #AA3F7D #AAA13F #3FAA6B

square

#3F48AA #AA3F7D #AAA13F #3FAA6B

split-complementary

#3F48AA #AA6B3F #7DAA3F

monochromatic

#1E2251 #2E357D #3F48AA #626AC5 #8E94D5

Accessibility & contrast

On white

7.72

#3F48AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3F48AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48AA

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48AA	#FFFFFF	#000000	##FFFFFF
##3F48AA	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AD

Deuteranopia (green-blind)

#004EA8

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f48aa;
/* rgb */ color: rgb(63, 72, 170);
/* oklch */ color: oklch(45.2% 0.155 274.4);

Tailwind

colors: {
  custom: {
    50: '#7f7bc4',
    500: '#3f48aa',
    950: '#000000',
  },
}

SCSS

$custom: #3f48aa;
$custom-light: #7f7bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48aa",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 170
  },
  "hsl": {
    "h": 234.953,
    "s": 45.923,
    "l": 45.686
  },
  "oklch": {
    "l": 0.45213,
    "c": 0.15527,
    "h": 274.4
  },
  "luminance": 0.08594
}

Semantic roles & 50–950 ramp

primary

#3F48AA

secondary

#C0BB85

accent

#CB52D6

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F48AA

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →