#377CA8#377CA8

#377CA8 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.2% C 0.097 H 239.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377CA8
RGB	rgb(55, 124, 168)
HSL	hsl(203, 51%, 44%)
HSV	hsv(203, 67%, 66%)
CMYK	cmyk(67.3%, 26.2%, 0%, 34.1%)
CIE-LAB	lab(49.56, -7.39, -29.83)
CIE-LCH	lch(49.56, 30.73, 256.10°)
OKLab	oklab(56.17% -0.049 -0.0839)
OKLCH	oklch(56.17% 0.097 239.7)
XYZ	xyz(15.8484, 18.0530, 39.6875)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CA8 #A86337

analogous

#37A89B #377CA8 #3743A8

triadic

#377CA8 #A8377C #7CA837

tetradic

#377CA8 #9B37A8 #A86337 #43A837

square

#377CA8 #9B37A8 #A86337 #43A837

split-complementary

#377CA8 #A83743 #A89B37

monochromatic

#19384C #285A7A #377CA8 #559BC7 #83B6D6

Accessibility & contrast

On white

4.55

#377CA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#377CA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CA8

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CA8	#FFFFFF	#000000	##000000
##377CA8	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687CAA

Deuteranopia (green-blind)

#5871A7

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ca8;
/* rgb */ color: rgb(55, 124, 168);
/* oklch */ color: oklch(56.2% 0.097 239.7);

Tailwind

colors: {
  custom: {
    50: '#7aa1c2',
    500: '#377ca8',
    950: '#000000',
  },
}

SCSS

$custom: #377ca8;
$custom-light: #7aa1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ca8",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 168
  },
  "hsl": {
    "h": 203.363,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.56167,
    "c": 0.09719,
    "h": 239.7
  },
  "luminance": 0.18055
}

Semantic roles & 50–950 ramp

primary

#377CA8

secondary

#C0967B

accent

#844EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #377CA8

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

Preview Lab → · Contrast checker → · Palette generator →