#3F48AB#3F48AB

#3F48AB is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.3% C 0.157 H 274.4°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F48AB
RGB	rgb(63, 72, 171)
HSL	hsl(235, 46%, 46%)
HSV	hsv(235, 63%, 67%)
CMYK	cmyk(63.2%, 57.9%, 0%, 32.9%)
CIE-LAB	lab(35.26, 27.87, -54.34)
CIE-LCH	lch(35.26, 61.07, 297.15°)
OKLab	oklab(45.29% 0.0119 -0.1562)
OKLCH	oklch(45.29% 0.157 274.4)
XYZ	xyz(11.7155, 8.6308, 39.5687)
Luminance	0.0863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F48AB #ABA23F

analogous

#3F7EAB #3F48AB #6C3FAB

triadic

#3F48AB #AB3F48 #48AB3F

tetradic

#3F48AB #AB3F7E #ABA23F #3FAB6C

square

#3F48AB #AB3F7E #ABA23F #3FAB6C

split-complementary

#3F48AB #AB6C3F #7EAB3F

monochromatic

#1E2252 #2F357E #3F48AB #626AC5 #8F95D6

Accessibility & contrast

On white

7.70

#3F48AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3F48AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48AB

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48AB	#FFFFFF	#000000	##FFFFFF
##3F48AB	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AE

Deuteranopia (green-blind)

#004EA9

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f48ab;
/* rgb */ color: rgb(63, 72, 171);
/* oklch */ color: oklch(45.3% 0.157 274.4);

Tailwind

colors: {
  custom: {
    50: '#807bc5',
    500: '#3f48ab',
    950: '#000000',
  },
}

SCSS

$custom: #3f48ab;
$custom-light: #807bc5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48ab",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 171
  },
  "hsl": {
    "h": 235,
    "s": 46.154,
    "l": 45.882
  },
  "oklch": {
    "l": 0.45293,
    "c": 0.15666,
    "h": 274.4
  },
  "luminance": 0.08632
}

Semantic roles & 50–950 ramp

primary

#3F48AB

secondary

#C1BC85

accent

#CB52D6

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F48AB

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

Preview Lab → · Contrast checker → · Palette generator →