#375FB5#375FB5

#375FB5 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.3% C 0.144 H 263.4°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#375FB5
RGB	rgb(55, 95, 181)
HSL	hsl(221, 53%, 46%)
HSV	hsv(221, 70%, 71%)
CMYK	cmyk(69.6%, 47.5%, 0%, 29%)
CIE-LAB	lab(41.74, 15.22, -49.81)
CIE-LCH	lch(41.74, 52.08, 286.99°)
OKLab	oklab(50.29% -0.0166 -0.1427)
OKLCH	oklch(50.29% 0.144 263.4)
XYZ	xyz(14.0053, 12.3314, 45.3492)
Luminance	0.1233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375FB5 #B58D37

analogous

#379EB5 #375FB5 #4E37B5

triadic

#375FB5 #B5375F #5FB537

tetradic

#375FB5 #B5379E #B58D37 #37B54E

square

#375FB5 #B5379E #B58D37 #37B54E

split-complementary

#375FB5 #B54E37 #9EB537

monochromatic

#1A2E57 #294686 #375FB5 #5C80CD #8BA4DC

Accessibility & contrast

On white

6.06

#375FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#375FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375FB5

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375FB5	#FFFFFF	#000000	##FFFFFF
##375FB5	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3269B8

Deuteranopia (green-blind)

#145DB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #375fb5;
/* rgb */ color: rgb(55, 95, 181);
/* oklch */ color: oklch(50.3% 0.144 263.4);

Tailwind

colors: {
  custom: {
    50: '#7d8bcc',
    500: '#375fb5',
    950: '#000000',
  },
}

SCSS

$custom: #375fb5;
$custom-light: #7d8bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#375fb5",
  "rgb": {
    "r": 55,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 220.952,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.50291,
    "c": 0.1437,
    "h": 263.4
  },
  "luminance": 0.12333
}

Semantic roles & 50–950 ramp

primary

#375FB5

secondary

#C6B082

accent

#AF4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #375FB5

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

Preview Lab → · Contrast checker → · Palette generator →