#374FA4#374FA4

#374FA4 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.7% C 0.140 H 268.5°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#374FA4
RGB	rgb(55, 79, 164)
HSL	hsl(227, 50%, 43%)
HSV	hsv(227, 66%, 64%)
CMYK	cmyk(66.5%, 51.8%, 0%, 35.7%)
CIE-LAB	lab(36.14, 19.42, -48.76)
CIE-LCH	lch(36.14, 52.48, 291.72°)
OKLab	oklab(45.67% -0.0037 -0.1399)
OKLCH	oklch(45.67% 0.14 268.5)
XYZ	xyz(11.0701, 9.0835, 36.2847)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374FA4 #A48C37

analogous

#3785A4 #374FA4 #5537A4

triadic

#374FA4 #A4374F #4FA437

tetradic

#374FA4 #A43785 #A48C37 #37A455

square

#374FA4 #A43785 #A48C37 #37A455

split-complementary

#374FA4 #A45537 #85A437

monochromatic

#182348 #283976 #374FA4 #536CC5 #8193D5

Accessibility & contrast

On white

7.45

#374FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#374FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374FA4

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374FA4	#FFFFFF	#000000	##FFFFFF
##374FA4	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D5AA7

Deuteranopia (green-blind)

#0050A2

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374fa4;
/* rgb */ color: rgb(55, 79, 164);
/* oklch */ color: oklch(45.7% 0.140 268.5);

Tailwind

colors: {
  custom: {
    50: '#7a7fc0',
    500: '#374fa4',
    950: '#000000',
  },
}

SCSS

$custom: #374fa4;
$custom-light: #7a7fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#374fa4",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 164
  },
  "hsl": {
    "h": 226.789,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45667,
    "c": 0.13993,
    "h": 268.5
  },
  "luminance": 0.09085
}

Semantic roles & 50–950 ramp

primary

#374FA4

secondary

#BEAF79

accent

#BB4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374FA4

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

Preview Lab → · Contrast checker → · Palette generator →