#375EB1#375EB1

#375EB1 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 49.8% C 0.139 H 263.3°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#375EB1
RGB	rgb(55, 94, 177)
HSL	hsl(221, 53%, 45%)
HSV	hsv(221, 69%, 69%)
CMYK	cmyk(68.9%, 46.9%, 0%, 30.6%)
CIE-LAB	lab(41.20, 14.39, -48.33)
CIE-LCH	lch(41.20, 50.42, 286.58°)
OKLab	oklab(49.8% -0.0162 -0.1384)
OKLCH	oklch(49.8% 0.139 263.3)
XYZ	xyz(13.5113, 11.9906, 43.1888)
Luminance	0.1199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375EB1 #B18A37

analogous

#379BB1 #375EB1 #4D37B1

triadic

#375EB1 #B1375E #5EB137

tetradic

#375EB1 #B1379B #B18A37 #37B14D

square

#375EB1 #B1379B #B18A37 #37B14D

split-complementary

#375EB1 #B14D37 #9BB137

monochromatic

#1A2C54 #284582 #375EB1 #5A7ECC #88A2DA

Accessibility & contrast

On white

6.18

#375EB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#375EB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375EB1

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375EB1	#FFFFFF	#000000	##FFFFFF
##375EB1	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3367B4

Deuteranopia (green-blind)

#1A5CAF

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #375eb1;
/* rgb */ color: rgb(55, 94, 177);
/* oklch */ color: oklch(49.8% 0.139 263.3);

Tailwind

colors: {
  custom: {
    50: '#7c8bc9',
    500: '#375eb1',
    950: '#000000',
  },
}

SCSS

$custom: #375eb1;
$custom-light: #7c8bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#375eb1",
  "rgb": {
    "r": 55,
    "g": 94,
    "b": 177
  },
  "hsl": {
    "h": 220.82,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49798,
    "c": 0.13934,
    "h": 263.3
  },
  "luminance": 0.11992
}

Semantic roles & 50–950 ramp

primary

#375EB1

secondary

#C4AE80

accent

#AE4CDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375EB1

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

Preview Lab → · Contrast checker → · Palette generator →