#375EB3#375EB3

#375EB3 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 49.9% C 0.142 H 263.6°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#375EB3
RGB	rgb(55, 94, 179)
HSL	hsl(221, 53%, 46%)
HSV	hsv(221, 69%, 70%)
CMYK	cmyk(69.3%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(41.33, 15.13, -49.30)
CIE-LCH	lch(41.33, 51.57, 287.06°)
OKLab	oklab(49.94% -0.0159 -0.1412)
OKLCH	oklch(49.94% 0.142 263.6)
XYZ	xyz(13.7121, 12.0709, 44.2464)
Luminance	0.1207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#375EB3 #B38C37

analogous

#379CB3 #375EB3 #4E37B3

triadic

#375EB3 #B3375E #5EB337

tetradic

#375EB3 #B3379C #B38C37 #37B34E

square

#375EB3 #B3379C #B38C37 #37B34E

split-complementary

#375EB3 #B34E37 #9CB337

monochromatic

#1A2D55 #294584 #375EB3 #5B7ECD #8AA3DB

Accessibility & contrast

On white

6.15

#375EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#375EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #375EB3

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##375EB3	#FFFFFF	#000000	##FFFFFF
##375EB3	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3168B6

Deuteranopia (green-blind)

#155CB1

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #375eb3;
/* rgb */ color: rgb(55, 94, 179);
/* oklch */ color: oklch(49.9% 0.142 263.6);

Tailwind

colors: {
  custom: {
    50: '#7c8bca',
    500: '#375eb3',
    950: '#000000',
  },
}

SCSS

$custom: #375eb3;
$custom-light: #7c8bca;
$custom-dark: #000000;

JSON

{
  "hex": "#375eb3",
  "rgb": {
    "r": 55,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 221.129,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.49936,
    "c": 0.14214,
    "h": 263.6
  },
  "luminance": 0.12072
}

Semantic roles & 50–950 ramp

primary

#375EB3

secondary

#C5B081

accent

#AF4BDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #375EB3

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

Preview Lab → · Contrast checker → · Palette generator →