#377AB8#377AB8

#377AB8 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.5% C 0.118 H 249.2°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#377AB8
RGB	rgb(55, 122, 184)
HSL	hsl(209, 54%, 47%)
HSV	hsv(209, 70%, 72%)
CMYK	cmyk(70.1%, 33.7%, 0%, 27.8%)
CIE-LAB	lab(49.73, -0.58, -38.83)
CIE-LCH	lch(49.73, 38.84, 269.15°)
OKLab	oklab(56.55% -0.0419 -0.1101)
OKLCH	oklch(56.55% 0.118 249.2)
XYZ	xyz(17.1836, 18.1901, 47.9435)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AB8 #B87537

analogous

#37B8B6 #377AB8 #373AB8

triadic

#377AB8 #B8377A #7AB837

tetradic

#377AB8 #B637B8 #B87537 #3AB837

square

#377AB8 #B637B8 #B87537 #3AB837

split-complementary

#377AB8 #B8373A #B8B637

monochromatic

#1B3C5A #295B89 #377AB8 #5D98CF #8DB6DD

Accessibility & contrast

On white

4.53

#377AB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#377AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AB8

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AB8	#FFFFFF	#000000	##000000
##377AB8	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7DBB

Deuteranopia (green-blind)

#4C71B7

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ab8;
/* rgb */ color: rgb(55, 122, 184);
/* oklch */ color: oklch(56.5% 0.118 249.2);

Tailwind

colors: {
  custom: {
    50: '#7da0cd',
    500: '#377ab8',
    950: '#000000',
  },
}

SCSS

$custom: #377ab8;
$custom-light: #7da0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377ab8",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 184
  },
  "hsl": {
    "h": 208.837,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56549,
    "c": 0.11785,
    "h": 249.2
  },
  "luminance": 0.18192
}

Semantic roles & 50–950 ramp

primary

#377AB8

secondary

#C7A484

accent

#914ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377AB8

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

Preview Lab → · Contrast checker → · Palette generator →