#375FBB#375FBB

#375FBB is a mid, vivid blue. Relative luminance 0.126; OKLCH L 50.7% C 0.152 H 264.1°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#375FBB
RGB	rgb(55, 95, 187)
HSL	hsl(222, 55%, 47%)
HSV	hsv(222, 71%, 73%)
CMYK	cmyk(70.6%, 49.2%, 0%, 26.7%)
CIE-LAB	lab(42.13, 17.43, -52.69)
CIE-LCH	lch(42.13, 55.50, 288.31°)
OKLab	oklab(50.71% -0.0157 -0.1512)
OKLCH	oklch(50.71% 0.152 264.1)
XYZ	xyz(14.6342, 12.5830, 48.6616)
Luminance	0.1258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375FBB #BB9337

analogous

#37A1BB #375FBB #5137BB

triadic

#375FBB #BB375F #5FBB37

tetradic

#375FBB #BB37A1 #BB9337 #37BB51

square

#375FBB #BB37A1 #BB9337 #37BB51

split-complementary

#375FBB #BB5137 #A1BB37

monochromatic

#1B2F5C #29478C #375FBB #5F81D0 #8EA7DE

Accessibility & contrast

On white

5.97

#375FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#375FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375FBB

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375FBB	#FFFFFF	#000000	##FFFFFF
##375FBB	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B6ABE

Deuteranopia (green-blind)

#005EB9

Tritanopia (blue-blind)

#007584

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #375fbb;
/* rgb */ color: rgb(55, 95, 187);
/* oklch */ color: oklch(50.7% 0.152 264.1);

Tailwind

colors: {
  custom: {
    50: '#7e8bd0',
    500: '#375fbb',
    950: '#000000',
  },
}

SCSS

$custom: #375fbb;
$custom-light: #7e8bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#375fbb",
  "rgb": {
    "r": 55,
    "g": 95,
    "b": 187
  },
  "hsl": {
    "h": 221.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.50714,
    "c": 0.15202,
    "h": 264.1
  },
  "luminance": 0.12584
}

Semantic roles & 50–950 ramp

primary

#375FBB

secondary

#C9B485

accent

#B14ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #375FBB

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

Preview Lab → · Contrast checker → · Palette generator →