#374EBB#374EBB

#374EBB is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.3% C 0.173 H 269.5°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#374EBB
RGB	rgb(55, 78, 187)
HSL	hsl(230, 55%, 47%)
HSV	hsv(230, 71%, 73%)
CMYK	cmyk(70.6%, 58.3%, 0%, 26.7%)
CIE-LAB	lab(37.57, 28.47, -60.07)
CIE-LCH	lch(37.57, 66.48, 295.36°)
OKLab	oklab(47.27% -0.0015 -0.1732)
OKLCH	oklch(47.27% 0.173 269.5)
XYZ	xyz(13.2665, 9.8475, 48.2057)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374EBB #BBA437

analogous

#3790BB #374EBB #6237BB

triadic

#374EBB #BB374E #4EBB37

tetradic

#374EBB #BB3790 #BBA437 #37BB62

square

#374EBB #BB3790 #BBA437 #37BB62

split-complementary

#374EBB #BB6237 #90BB37

monochromatic

#1B275C #293A8C #374EBB #5F73D0 #8E9CDE

Accessibility & contrast

On white

7.07

#374EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#374EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374EBB

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374EBB	#FFFFFF	#000000	##FFFFFF
##374EBB	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBF

Deuteranopia (green-blind)

#0053B9

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #374ebb;
/* rgb */ color: rgb(55, 78, 187);
/* oklch */ color: oklch(47.3% 0.173 269.5);

Tailwind

colors: {
  custom: {
    50: '#7f7fd0',
    500: '#374ebb',
    950: '#000000',
  },
}

SCSS

$custom: #374ebb;
$custom-light: #7f7fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#374ebb",
  "rgb": {
    "r": 55,
    "g": 78,
    "b": 187
  },
  "hsl": {
    "h": 229.545,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47271,
    "c": 0.1732,
    "h": 269.5
  },
  "luminance": 0.09849
}

Semantic roles & 50–950 ramp

primary

#374EBB

secondary

#C9BD85

accent

#C44ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #374EBB

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

Preview Lab → · Contrast checker → · Palette generator →