#374EA3#374EA3

#374EA3 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.4% C 0.140 H 268.9°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#374EA3
RGB	rgb(55, 78, 163)
HSL	hsl(227, 50%, 43%)
HSV	hsv(227, 66%, 64%)
CMYK	cmyk(66.3%, 52.1%, 0%, 36.1%)
CIE-LAB	lab(35.80, 19.71, -48.71)
CIE-LCH	lch(35.80, 52.55, 292.03°)
OKLab	oklab(45.38% -0.0028 -0.1398)
OKLCH	oklch(45.38% 0.14 268.9)
XYZ	xyz(10.9085, 8.9043, 35.7871)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA3 #A38C37

analogous

#3784A3 #374EA3 #5637A3

triadic

#374EA3 #A3374E #4EA337

tetradic

#374EA3 #A33784 #A38C37 #37A356

square

#374EA3 #A33784 #A38C37 #37A356

split-complementary

#374EA3 #A35637 #84A337

monochromatic

#182247 #283875 #374EA3 #526BC5 #8092D4

Accessibility & contrast

On white

7.55

#374EA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#374EA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA3

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA3	#FFFFFF	#000000	##FFFFFF
##374EA3	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B59A6

Deuteranopia (green-blind)

#0050A1

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ea3;
/* rgb */ color: rgb(55, 78, 163);
/* oklch */ color: oklch(45.4% 0.140 268.9);

Tailwind

colors: {
  custom: {
    50: '#7a7fbf',
    500: '#374ea3',
    950: '#000000',
  },
}

SCSS

$custom: #374ea3;
$custom-light: #7a7fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea3",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 163
  },
  "hsl": {
    "h": 227.222,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.45384,
    "c": 0.1398,
    "h": 268.9
  },
  "luminance": 0.08905
}

Semantic roles & 50–950 ramp

primary

#374EA3

secondary

#BEAF78

accent

#BC4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374EA3

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

Preview Lab → · Contrast checker → · Palette generator →