#374EA9#374EA9

#374EA9 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.8% C 0.148 H 269.1°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#374EA9
RGB	rgb(55, 78, 169)
HSL	hsl(228, 51%, 44%)
HSV	hsv(228, 67%, 66%)
CMYK	cmyk(67.5%, 53.8%, 0%, 33.7%)
CIE-LAB	lab(36.22, 21.91, -51.61)
CIE-LCH	lch(36.22, 56.07, 293.00°)
OKLab	oklab(45.84% -0.0023 -0.1483)
OKLCH	oklch(45.84% 0.148 269.1)
XYZ	xyz(11.4589, 9.1245, 38.6857)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA9 #A99237

analogous

#3787A9 #374EA9 #5937A9

triadic

#374EA9 #A9374E #4EA937

tetradic

#374EA9 #A93787 #A99237 #37A959

square

#374EA9 #A93787 #A99237 #37A959

split-complementary

#374EA9 #A95937 #87A937

monochromatic

#19234D #28397B #374EA9 #556CC8 #8494D7

Accessibility & contrast

On white

7.43

#374EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#374EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA9

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA9	#FFFFFF	#000000	##FFFFFF
##374EA9	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F5BAC

Deuteranopia (green-blind)

#0050A7

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374ea9;
/* rgb */ color: rgb(55, 78, 169);
/* oklch */ color: oklch(45.8% 0.148 269.1);

Tailwind

colors: {
  custom: {
    50: '#7b7fc3',
    500: '#374ea9',
    950: '#000000',
  },
}

SCSS

$custom: #374ea9;
$custom-light: #7b7fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea9",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 169
  },
  "hsl": {
    "h": 227.895,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45838,
    "c": 0.14833,
    "h": 269.1
  },
  "luminance": 0.09126
}

Semantic roles & 50–950 ramp

primary

#374EA9

secondary

#C0B37B

accent

#BE4DDA

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #374EA9

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

Preview Lab → · Contrast checker → · Palette generator →