#374EA4#374EA4

#374EA4 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.5% C 0.141 H 268.9°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#374EA4
RGB	rgb(55, 78, 164)
HSL	hsl(227, 50%, 43%)
HSV	hsv(227, 66%, 64%)
CMYK	cmyk(66.5%, 52.4%, 0%, 35.7%)
CIE-LAB	lab(35.87, 20.08, -49.20)
CIE-LCH	lch(35.87, 53.14, 292.20°)
OKLab	oklab(45.46% -0.0027 -0.1412)
OKLCH	oklch(45.46% 0.141 268.9)
XYZ	xyz(10.9985, 8.9403, 36.2608)
Luminance	0.0894 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA4 #A48D37

analogous

#3785A4 #374EA4 #5637A4

triadic

#374EA4 #A4374E #4EA437

tetradic

#374EA4 #A43785 #A48D37 #37A456

square

#374EA4 #A43785 #A48D37 #37A456

split-complementary

#374EA4 #A45637 #85A437

monochromatic

#182248 #283876 #374EA4 #536BC5 #8192D5

Accessibility & contrast

On white

7.53

#374EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#374EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA4

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA4	#FFFFFF	#000000	##FFFFFF
##374EA4	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#195AA7

Deuteranopia (green-blind)

#0050A2

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ea4;
/* rgb */ color: rgb(55, 78, 164);
/* oklch */ color: oklch(45.5% 0.141 268.9);

Tailwind

colors: {
  custom: {
    50: '#7a7fc0',
    500: '#374ea4',
    950: '#000000',
  },
}

SCSS

$custom: #374ea4;
$custom-light: #7a7fc0;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea4",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 164
  },
  "hsl": {
    "h": 227.339,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45459,
    "c": 0.14123,
    "h": 268.9
  },
  "luminance": 0.08941
}

Semantic roles & 50–950 ramp

primary

#374EA4

secondary

#BEAF79

accent

#BC4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374EA4

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

Preview Lab → · Contrast checker → · Palette generator →