#374EA1#374EA1

#374EA1 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.2% C 0.137 H 268.7°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#374EA1
RGB	rgb(55, 78, 161)
HSL	hsl(227, 49%, 42%)
HSV	hsv(227, 66%, 63%)
CMYK	cmyk(65.8%, 51.6%, 0%, 36.9%)
CIE-LAB	lab(35.66, 18.98, -47.74)
CIE-LCH	lch(35.66, 51.37, 291.68°)
OKLab	oklab(45.24% -0.003 -0.1369)
OKLCH	oklch(45.24% 0.137 268.7)
XYZ	xyz(10.7308, 8.8332, 34.8508)
Luminance	0.0883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA1 #A18A37

analogous

#3783A1 #374EA1 #5537A1

triadic

#374EA1 #A1374E #4EA137

tetradic

#374EA1 #A13783 #A18A37 #37A155

square

#374EA1 #A13783 #A18A37 #37A155

split-complementary

#374EA1 #A15537 #83A137

monochromatic

#182246 #273873 #374EA1 #516AC4 #7F91D3

Accessibility & contrast

On white

7.59

#374EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#374EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA1

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA1	#FFFFFF	#000000	##FFFFFF
##374EA1	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E59A4

Deuteranopia (green-blind)

#004F9F

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ea1;
/* rgb */ color: rgb(55, 78, 161);
/* oklch */ color: oklch(45.2% 0.137 268.7);

Tailwind

colors: {
  custom: {
    50: '#797fbd',
    500: '#374ea1',
    950: '#000000',
  },
}

SCSS

$custom: #374ea1;
$custom-light: #797fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea1",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 161
  },
  "hsl": {
    "h": 226.981,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45235,
    "c": 0.13693,
    "h": 268.7
  },
  "luminance": 0.08834
}

Semantic roles & 50–950 ramp

primary

#374EA1

secondary

#BDAE77

accent

#BB4FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374EA1

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

Preview Lab → · Contrast checker → · Palette generator →