#375BB9#375BB9

#375BB9 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.7% C 0.154 H 265.4°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#375BB9
RGB	rgb(55, 91, 185)
HSL	hsl(223, 54%, 47%)
HSV	hsv(223, 70%, 73%)
CMYK	cmyk(70.3%, 50.8%, 0%, 27.5%)
CIE-LAB	lab(40.89, 19.29, -53.52)
CIE-LCH	lch(40.89, 56.89, 289.82°)
OKLab	oklab(49.73% -0.0124 -0.1537)
OKLCH	oklch(49.73% 0.154 265.4)
XYZ	xyz(14.0705, 11.7957, 47.4248)
Luminance	0.1180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BB9 #B99537

analogous

#379CB9 #375BB9 #5437B9

triadic

#375BB9 #B9375B #5BB937

tetradic

#375BB9 #B9379C #B99537 #37B954

square

#375BB9 #B9379C #B99537 #37B954

split-complementary

#375BB9 #B95437 #9CB937

monochromatic

#1B2D5B #29448A #375BB9 #5E7DCF #8DA3DD

Accessibility & contrast

On white

6.25

#375BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#375BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BB9

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BB9	#FFFFFF	#000000	##FFFFFF
##375BB9	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2367BC

Deuteranopia (green-blind)

#005BB7

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #375bb9;
/* rgb */ color: rgb(55, 91, 185);
/* oklch */ color: oklch(49.7% 0.154 265.4);

Tailwind

colors: {
  custom: {
    50: '#7e88cf',
    500: '#375bb9',
    950: '#000000',
  },
}

SCSS

$custom: #375bb9;
$custom-light: #7e88cf;
$custom-dark: #000000;

JSON

{
  "hex": "#375bb9",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 185
  },
  "hsl": {
    "h": 223.385,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49728,
    "c": 0.15421,
    "h": 265.4
  },
  "luminance": 0.11797
}

Semantic roles & 50–950 ramp

primary

#375BB9

secondary

#C8B584

accent

#B54ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #375BB9

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

Preview Lab → · Contrast checker → · Palette generator →