#377CB5#377CB5

#377CB5 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.112 H 246.5°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#377CB5
RGB	rgb(55, 124, 181)
HSL	hsl(207, 53%, 46%)
HSV	hsv(207, 70%, 71%)
CMYK	cmyk(69.6%, 31.5%, 0%, 29%)
CIE-LAB	lab(50.17, -2.84, -36.40)
CIE-LCH	lch(50.17, 36.51, 265.54°)
OKLab	oklab(56.85% -0.0448 -0.103)
OKLCH	oklch(56.85% 0.112 246.5)
XYZ	xyz(17.1205, 18.5619, 46.3876)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CB5 #B57037

analogous

#37B5AF #377CB5 #373DB5

triadic

#377CB5 #B5377C #7CB537

tetradic

#377CB5 #AF37B5 #B57037 #3DB537

square

#377CB5 #AF37B5 #B57037 #3DB537

split-complementary

#377CB5 #B5373D #B5AF37

monochromatic

#1A3C57 #295C86 #377CB5 #5C9ACD #8BB7DC

Accessibility & contrast

On white

4.46

#377CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#377CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CB5

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CB5	#FFFFFF	#000000	##000000
##377CB5	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627EB7

Deuteranopia (green-blind)

#5172B4

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377cb5;
/* rgb */ color: rgb(55, 124, 181);
/* oklch */ color: oklch(56.9% 0.112 246.5);

Tailwind

colors: {
  custom: {
    50: '#7ca1cb',
    500: '#377cb5',
    950: '#000000',
  },
}

SCSS

$custom: #377cb5;
$custom-light: #7ca1cb;
$custom-dark: #000000;

JSON

{
  "hex": "#377cb5",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 181
  },
  "hsl": {
    "h": 207.143,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.5685,
    "c": 0.11235,
    "h": 246.5
  },
  "luminance": 0.18564
}

Semantic roles & 50–950 ramp

primary

#377CB5

secondary

#C6A182

accent

#8D4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377CB5

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

Preview Lab → · Contrast checker → · Palette generator →