#3F4EA8#3F4EA8

#3F4EA8 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.2% C 0.145 H 272.4°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EA8
RGB	rgb(63, 78, 168)
HSL	hsl(231, 45%, 45%)
HSV	hsv(231, 63%, 66%)
CMYK	cmyk(62.5%, 53.6%, 0%, 34.1%)
CIE-LAB	lab(36.62, 22.92, -50.36)
CIE-LCH	lch(36.62, 55.33, 294.47°)
OKLab	oklab(46.24% 0.006 -0.1444)
OKLCH	oklch(46.24% 0.145 272.4)
XYZ	xyz(11.8398, 9.3317, 38.2155)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EA8 #A8993F

analogous

#3F82A8 #3F4EA8 #653FA8

triadic

#3F4EA8 #A83F4E #4EA83F

tetradic

#3F4EA8 #A83F82 #A8993F #3FA865

square

#3F4EA8 #A83F82 #A8993F #3FA865

split-complementary

#3F4EA8 #A8653F #82A83F

monochromatic

#1E254F #2E397B #3F4EA8 #616FC4 #8D97D4

Accessibility & contrast

On white

7.33

#3F4EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F4EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4EA8

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EA8	#FFFFFF	#000000	##FFFFFF
##3F4EA8	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#155BAB

Deuteranopia (green-blind)

#0052A6

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f4ea8;
/* rgb */ color: rgb(63, 78, 168);
/* oklch */ color: oklch(46.2% 0.145 272.4);

Tailwind

colors: {
  custom: {
    50: '#7f7fc2',
    500: '#3f4ea8',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ea8;
$custom-light: #7f7fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ea8",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 168
  },
  "hsl": {
    "h": 231.429,
    "s": 45.455,
    "l": 45.294
  },
  "oklch": {
    "l": 0.46235,
    "c": 0.14455,
    "h": 272.4
  },
  "luminance": 0.09333
}

Semantic roles & 50–950 ramp

primary

#3F4EA8

secondary

#BFB784

accent

#C253D5

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #3F4EA8

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

Preview Lab → · Contrast checker → · Palette generator →