#3F4DA5#3F4DA5

#3F4DA5 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.8% C 0.142 H 272.7°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DA5
RGB	rgb(63, 77, 165)
HSL	hsl(232, 45%, 45%)
HSV	hsv(232, 62%, 65%)
CMYK	cmyk(61.8%, 53.3%, 0%, 35.3%)
CIE-LAB	lab(36.14, 22.52, -49.34)
CIE-LCH	lch(36.14, 54.23, 294.53°)
OKLab	oklab(45.81% 0.0068 -0.1414)
OKLCH	oklch(45.81% 0.142 272.7)
XYZ	xyz(11.4931, 9.0802, 36.7370)
Luminance	0.0908 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DA5 #A5973F

analogous

#3F80A5 #3F4DA5 #643FA5

triadic

#3F4DA5 #A53F4D #4DA53F

tetradic

#3F4DA5 #A53F80 #A5973F #3FA564

square

#3F4DA5 #A53F80 #A5973F #3FA564

split-complementary

#3F4DA5 #A5643F #80A53F

monochromatic

#1D244C #2E3879 #3F4DA5 #5F6DC2 #8C95D3

Accessibility & contrast

On white

7.46

#3F4DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3F4DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DA5

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DA5	#FFFFFF	#000000	##FFFFFF
##3F4DA5	1.00	7.46	2.82	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175AA8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f4da5;
/* rgb */ color: rgb(63, 77, 165);
/* oklch */ color: oklch(45.8% 0.142 272.7);

Tailwind

colors: {
  custom: {
    50: '#7e7ec0',
    500: '#3f4da5',
    950: '#000000',
  },
}

SCSS

$custom: #3f4da5;
$custom-light: #7e7ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4da5",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 165
  },
  "hsl": {
    "h": 231.765,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.45809,
    "c": 0.1416,
    "h": 272.7
  },
  "luminance": 0.09081
}

Semantic roles & 50–950 ramp

primary

#3F4DA5

secondary

#BEB682

accent

#C353D4

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #3F4DA5

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

Preview Lab → · Contrast checker → · Palette generator →