#375B9F#375B9F

#375B9F is a mid, moderate blue. Relative luminance 0.108; OKLCH L 47.9% C 0.118 H 261.9°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#375B9F
RGB	rgb(55, 91, 159)
HSL	hsl(219, 49%, 42%)
HSV	hsv(219, 65%, 62%)
CMYK	cmyk(65.4%, 42.8%, 0%, 37.6%)
CIE-LAB	lab(39.24, 9.73, -40.81)
CIE-LCH	lch(39.24, 41.95, 283.41°)
OKLab	oklab(47.93% -0.0165 -0.1163)
OKLCH	oklch(47.93% 0.118 261.9)
XYZ	xyz(11.5724, 10.7965, 34.2682)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375B9F #9F7B37

analogous

#378F9F #375B9F #47379F

triadic

#375B9F #9F375B #5B9F37

tetradic

#375B9F #9F378F #9F7B37 #379F47

square

#375B9F #9F378F #9F7B37 #379F47

split-complementary

#375B9F #9F4737 #8F9F37

monochromatic

#182744 #274172 #375B9F #5178C3 #7E9BD2

Accessibility & contrast

On white

6.65

#375B9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#375B9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375B9F

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375B9F	#FFFFFF	#000000	##FFFFFF
##375B9F	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C62A2

Deuteranopia (green-blind)

#2C589E

Tritanopia (blue-blind)

#006A75

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #375b9f;
/* rgb */ color: rgb(55, 91, 159);
/* oklch */ color: oklch(47.9% 0.118 261.9);

Tailwind

colors: {
  custom: {
    50: '#7989bc',
    500: '#375b9f',
    950: '#000000',
  },
}

SCSS

$custom: #375b9f;
$custom-light: #7989bc;
$custom-dark: #000000;

JSON

{
  "hex": "#375b9f",
  "rgb": {
    "r": 55,
    "g": 91,
    "b": 159
  },
  "hsl": {
    "h": 219.231,
    "s": 48.598,
    "l": 41.961
  },
  "oklch": {
    "l": 0.47929,
    "c": 0.11751,
    "h": 261.9
  },
  "luminance": 0.10798
}

Semantic roles & 50–950 ramp

primary

#375B9F

secondary

#BCA476

accent

#A950D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #375B9F

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

Preview Lab → · Contrast checker → · Palette generator →