#375DB1#375DB1

#375DB1 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.6% C 0.141 H 263.7°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#375DB1
RGB	rgb(55, 93, 177)
HSL	hsl(221, 53%, 45%)
HSV	hsv(221, 69%, 69%)
CMYK	cmyk(68.9%, 47.5%, 0%, 30.6%)
CIE-LAB	lab(40.92, 15.04, -48.78)
CIE-LCH	lch(40.92, 51.05, 287.14°)
OKLab	oklab(49.58% -0.0153 -0.1397)
OKLCH	oklch(49.58% 0.141 263.7)
XYZ	xyz(13.4229, 11.8139, 43.1594)
Luminance	0.1182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375DB1 #B18B37

analogous

#379AB1 #375DB1 #4E37B1

triadic

#375DB1 #B1375D #5DB137

tetradic

#375DB1 #B1379A #B18B37 #37B14E

square

#375DB1 #B1379A #B18B37 #37B14E

split-complementary

#375DB1 #B14E37 #9AB137

monochromatic

#1A2C54 #284482 #375DB1 #5A7DCC #88A2DA

Accessibility & contrast

On white

6.24

#375DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#375DB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375DB1

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375DB1	#FFFFFF	#000000	##FFFFFF
##375DB1	1.00	6.24	3.36	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3166B4

Deuteranopia (green-blind)

#165BAF

Tritanopia (blue-blind)

#00717E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #375db1;
/* rgb */ color: rgb(55, 93, 177);
/* oklch */ color: oklch(49.6% 0.141 263.7);

Tailwind

colors: {
  custom: {
    50: '#7c8ac9',
    500: '#375db1',
    950: '#000000',
  },
}

SCSS

$custom: #375db1;
$custom-light: #7c8ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#375db1",
  "rgb": {
    "r": 55,
    "g": 93,
    "b": 177
  },
  "hsl": {
    "h": 221.311,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49581,
    "c": 0.14058,
    "h": 263.7
  },
  "luminance": 0.11815
}

Semantic roles & 50–950 ramp

primary

#375DB1

secondary

#C4AF80

accent

#AF4CDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375DB1

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

Preview Lab → · Contrast checker → · Palette generator →