#374EA8#374EA8

#374EA8 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.8% C 0.147 H 269.1°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#374EA8
RGB	rgb(55, 78, 168)
HSL	hsl(228, 51%, 44%)
HSV	hsv(228, 67%, 66%)
CMYK	cmyk(67.3%, 53.6%, 0%, 34.1%)
CIE-LAB	lab(36.15, 21.54, -51.13)
CIE-LCH	lch(36.15, 55.48, 292.84°)
OKLab	oklab(45.76% -0.0024 -0.1469)
OKLCH	oklch(45.76% 0.147 269.1)
XYZ	xyz(11.3654, 9.0871, 38.1932)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EA8 #A89137

analogous

#3786A8 #374EA8 #5837A8

triadic

#374EA8 #A8374E #4EA837

tetradic

#374EA8 #A83786 #A89137 #37A858

square

#374EA8 #A83786 #A89137 #37A858

split-complementary

#374EA8 #A85837 #86A837

monochromatic

#19234C #28397A #374EA8 #556CC7 #8394D6

Accessibility & contrast

On white

7.45

#374EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#374EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EA8

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EA8	#FFFFFF	#000000	##FFFFFF
##374EA8	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115AAB

Deuteranopia (green-blind)

#0050A6

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #374ea8;
/* rgb */ color: rgb(55, 78, 168);
/* oklch */ color: oklch(45.8% 0.147 269.1);

Tailwind

colors: {
  custom: {
    50: '#7b7fc2',
    500: '#374ea8',
    950: '#000000',
  },
}

SCSS

$custom: #374ea8;
$custom-light: #7b7fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#374ea8",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 168
  },
  "hsl": {
    "h": 227.788,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.45762,
    "c": 0.14691,
    "h": 269.1
  },
  "luminance": 0.09088
}

Semantic roles & 50–950 ramp

primary

#374EA8

secondary

#C0B27B

accent

#BE4EDA

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #374EA8

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

Preview Lab → · Contrast checker → · Palette generator →