#374DAB#374DAB

#374DAB is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.8% C 0.152 H 269.5°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#374DAB
RGB	rgb(55, 77, 171)
HSL	hsl(229, 51%, 44%)
HSV	hsv(229, 68%, 67%)
CMYK	cmyk(67.8%, 55%, 0%, 32.9%)
CIE-LAB	lab(36.10, 23.29, -53.01)
CIE-LCH	lch(36.10, 57.90, 293.72°)
OKLab	oklab(45.79% -0.0012 -0.1524)
OKLCH	oklch(45.79% 0.152 269.5)
XYZ	xyz(11.5776, 9.0592, 39.6586)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374DAB #AB9537

analogous

#3787AB #374DAB #5B37AB

triadic

#374DAB #AB374D #4DAB37

tetradic

#374DAB #AB3787 #AB9537 #37AB5B

square

#374DAB #AB3787 #AB9537 #37AB5B

split-complementary

#374DAB #AB5B37 #87AB37

monochromatic

#19234E #28387D #374DAB #566CC9 #8594D8

Accessibility & contrast

On white

7.47

#374DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#374DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374DAB

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374DAB	#FFFFFF	#000000	##FFFFFF
##374DAB	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#025AAE

Deuteranopia (green-blind)

#0050A9

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374dab;
/* rgb */ color: rgb(55, 77, 171);
/* oklch */ color: oklch(45.8% 0.152 269.5);

Tailwind

colors: {
  custom: {
    50: '#7c7ec5',
    500: '#374dab',
    950: '#000000',
  },
}

SCSS

$custom: #374dab;
$custom-light: #7c7ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#374dab",
  "rgb": {
    "r": 55,
    "g": 77,
    "b": 171
  },
  "hsl": {
    "h": 228.621,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4579,
    "c": 0.15243,
    "h": 269.5
  },
  "luminance": 0.0906
}

Semantic roles & 50–950 ramp

primary

#374DAB

secondary

#C1B47C

accent

#C04DDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374DAB

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

Preview Lab → · Contrast checker → · Palette generator →