#3F4BA3#3F4BA3

#3F4BA3 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.3% C 0.141 H 273.5°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BA3
RGB	rgb(63, 75, 163)
HSL	hsl(233, 44%, 44%)
HSV	hsv(233, 61%, 64%)
CMYK	cmyk(61.3%, 54%, 0%, 36.1%)
CIE-LAB	lab(35.46, 23.12, -49.23)
CIE-LCH	lch(35.46, 54.39, 295.15°)
OKLab	oklab(45.26% 0.0087 -0.1411)
OKLCH	oklch(45.26% 0.141 273.5)
XYZ	xyz(11.1747, 8.7324, 35.7399)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BA3 #A3973F

analogous

#3F7DA3 #3F4BA3 #653FA3

triadic

#3F4BA3 #A33F4B #4BA33F

tetradic

#3F4BA3 #A33F7D #A3973F #3FA365

square

#3F4BA3 #A33F7D #A3973F #3FA365

split-complementary

#3F4BA3 #A3653F #7DA33F

monochromatic

#1D224B #2E3777 #3F4BA3 #5E6AC1 #8A93D2

Accessibility & contrast

On white

7.65

#3F4BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3F4BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BA3

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BA3	#FFFFFF	#000000	##FFFFFF
##3F4BA3	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1358A6

Deuteranopia (green-blind)

#004FA1

Tritanopia (blue-blind)

#005F6F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3f4ba3;
/* rgb */ color: rgb(63, 75, 163);
/* oklch */ color: oklch(45.3% 0.141 273.5);

Tailwind

colors: {
  custom: {
    50: '#7e7dbf',
    500: '#3f4ba3',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ba3;
$custom-light: #7e7dbf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ba3",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 163
  },
  "hsl": {
    "h": 232.8,
    "s": 44.248,
    "l": 44.314
  },
  "oklch": {
    "l": 0.45257,
    "c": 0.14142,
    "h": 273.5
  },
  "luminance": 0.08733
}

Semantic roles & 50–950 ramp

primary

#3F4BA3

secondary

#BDB681

accent

#C554D4

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F4BA3

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

Preview Lab → · Contrast checker → · Palette generator →