#375BB5#375BB5

#375BB5 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.149 H 265.0°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#375BB5
RGB	rgb(55, 91, 181)
HSL	hsl(223, 53%, 46%)
HSV	hsv(223, 70%, 71%)
CMYK	cmyk(69.6%, 49.7%, 0%, 29%)
CIE-LAB	lab(40.62, 17.81, -51.61)
CIE-LCH	lch(40.62, 54.60, 289.04°)
OKLab	oklab(49.44% -0.0129 -0.1481)
OKLCH	oklch(49.44% 0.149 265)
XYZ	xyz(13.6542, 11.6292, 45.2322)
Luminance	0.1163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BB5 #B59137

analogous

#379AB5 #375BB5 #5237B5

triadic

#375BB5 #B5375B #5BB537

tetradic

#375BB5 #B5379A #B59137 #37B552

square

#375BB5 #B5379A #B59137 #37B552

split-complementary

#375BB5 #B55237 #9AB537

monochromatic

#1A2C57 #294386 #375BB5 #5C7CCD #8BA2DC

Accessibility & contrast

On white

6.31

#375BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#375BB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BB5

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BB5	#FFFFFF	#000000	##FFFFFF
##375BB5	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2866B8

Deuteranopia (green-blind)

#005AB3

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #375bb5;
/* rgb */ color: rgb(55, 91, 181);
/* oklch */ color: oklch(49.4% 0.149 265.0);

Tailwind

colors: {
  custom: {
    50: '#7d88cc',
    500: '#375bb5',
    950: '#000000',
  },
}

SCSS

$custom: #375bb5;
$custom-light: #7d88cc;
$custom-dark: #000000;

JSON

{
  "hex": "#375bb5",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 181
  },
  "hsl": {
    "h": 222.857,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.49437,
    "c": 0.14866,
    "h": 265
  },
  "luminance": 0.11631
}

Semantic roles & 50–950 ramp

primary

#375BB5

secondary

#C6B282

accent

#B34BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375BB5

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

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