#375FB1#375FB1

#375FB1 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.0% C 0.138 H 262.8°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#375FB1
RGB	rgb(55, 95, 177)
HSL	hsl(220, 53%, 45%)
HSV	hsv(220, 69%, 69%)
CMYK	cmyk(68.9%, 46.3%, 0%, 30.6%)
CIE-LAB	lab(41.48, 13.75, -47.87)
CIE-LCH	lch(41.48, 49.81, 286.02°)
OKLab	oklab(50.02% -0.0172 -0.137)
OKLCH	oklch(50.02% 0.138 262.8)
XYZ	xyz(13.6008, 12.1696, 43.2186)
Luminance	0.1217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375FB1 #B18937

analogous

#379CB1 #375FB1 #4C37B1

triadic

#375FB1 #B1375F #5FB137

tetradic

#375FB1 #B1379C #B18937 #37B14C

square

#375FB1 #B1379C #B18937 #37B14C

split-complementary

#375FB1 #B14C37 #9CB137

monochromatic

#1A2D54 #284682 #375FB1 #5A7FCC #88A3DA

Accessibility & contrast

On white

6.11

#375FB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#375FB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375FB1

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375FB1	#FFFFFF	#000000	##FFFFFF
##375FB1	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3568B4

Deuteranopia (green-blind)

#1D5DAF

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #375fb1;
/* rgb */ color: rgb(55, 95, 177);
/* oklch */ color: oklch(50.0% 0.138 262.8);

Tailwind

colors: {
  custom: {
    50: '#7c8bc9',
    500: '#375fb1',
    950: '#000000',
  },
}

SCSS

$custom: #375fb1;
$custom-light: #7c8bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#375fb1",
  "rgb": {
    "r": 55,
    "g": 95,
    "b": 177
  },
  "hsl": {
    "h": 220.328,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.50015,
    "c": 0.13812,
    "h": 262.8
  },
  "luminance": 0.12171
}

Semantic roles & 50–950 ramp

primary

#375FB1

secondary

#C4AE80

accent

#AD4CDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #375FB1

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

Preview Lab → · Contrast checker → · Palette generator →