#374FB9#374FB9

#374FB9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.3% C 0.169 H 269.2°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#374FB9
RGB	rgb(55, 79, 185)
HSL	hsl(229, 54%, 47%)
HSV	hsv(229, 70%, 73%)
CMYK	cmyk(70.3%, 57.3%, 0%, 27.5%)
CIE-LAB	lab(37.67, 27.09, -58.73)
CIE-LCH	lch(37.67, 64.68, 294.77°)
OKLab	oklab(47.3% -0.0023 -0.1692)
OKLCH	oklch(47.3% 0.169 269.2)
XYZ	xyz(13.1255, 9.9057, 47.1098)
Luminance	0.0991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374FB9 #B9A137

analogous

#3790B9 #374FB9 #6037B9

triadic

#374FB9 #B9374F #4FB937

tetradic

#374FB9 #B93790 #B9A137 #37B960

square

#374FB9 #B93790 #B9A137 #37B960

split-complementary

#374FB9 #B96037 #90B937

monochromatic

#1B275B #293B8A #374FB9 #5E73CF #8D9CDD

Accessibility & contrast

On white

7.04

#374FB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#374FB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374FB9

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374FB9	#FFFFFF	#000000	##FFFFFF
##374FB9	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #374fb9;
/* rgb */ color: rgb(55, 79, 185);
/* oklch */ color: oklch(47.3% 0.169 269.2);

Tailwind

colors: {
  custom: {
    50: '#7e80cf',
    500: '#374fb9',
    950: '#000000',
  },
}

SCSS

$custom: #374fb9;
$custom-light: #7e80cf;
$custom-dark: #000000;

JSON

{
  "hex": "#374fb9",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 185
  },
  "hsl": {
    "h": 228.923,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47301,
    "c": 0.16924,
    "h": 269.2
  },
  "luminance": 0.09907
}

Semantic roles & 50–950 ramp

primary

#374FB9

secondary

#C8BB84

accent

#C24ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #374FB9

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

Preview Lab → · Contrast checker → · Palette generator →