#375BB3#375BB3

#375BB3 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.3% C 0.146 H 264.8°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#375BB3
RGB	rgb(55, 91, 179)
HSL	hsl(223, 53%, 46%)
HSV	hsv(223, 69%, 70%)
CMYK	cmyk(69.3%, 49.2%, 0%, 29.8%)
CIE-LAB	lab(40.49, 17.07, -50.65)
CIE-LCH	lch(40.49, 53.45, 288.63°)
OKLab	oklab(49.29% -0.0132 -0.1453)
OKLCH	oklch(49.29% 0.146 264.8)
XYZ	xyz(13.4505, 11.5477, 44.1592)
Luminance	0.1155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375BB3 #B38F37

analogous

#3799B3 #375BB3 #5137B3

triadic

#375BB3 #B3375B #5BB337

tetradic

#375BB3 #B33799 #B38F37 #37B351

square

#375BB3 #B33799 #B38F37 #37B351

split-complementary

#375BB3 #B35137 #99B337

monochromatic

#1A2B55 #294384 #375BB3 #5B7CCD #8AA1DB

Accessibility & contrast

On white

6.34

#375BB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#375BB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375BB3

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375BB3	#FFFFFF	#000000	##FFFFFF
##375BB3	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A65B6

Deuteranopia (green-blind)

#045AB1

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #375bb3;
/* rgb */ color: rgb(55, 91, 179);
/* oklch */ color: oklch(49.3% 0.146 264.8);

Tailwind

colors: {
  custom: {
    50: '#7c88ca',
    500: '#375bb3',
    950: '#000000',
  },
}

SCSS

$custom: #375bb3;
$custom-light: #7c88ca;
$custom-dark: #000000;

JSON

{
  "hex": "#375bb3",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 179
  },
  "hsl": {
    "h": 222.581,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.49294,
    "c": 0.14587,
    "h": 264.8
  },
  "luminance": 0.11549
}

Semantic roles & 50–950 ramp

primary

#375BB3

secondary

#C5B181

accent

#B24BDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375BB3

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

Preview Lab → · Contrast checker → · Palette generator →