#377BBA#377BBA

#377BBA is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.119 H 249.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#377BBA
RGB	rgb(55, 123, 186)
HSL	hsl(209, 54%, 47%)
HSV	hsv(209, 70%, 73%)
CMYK	cmyk(70.4%, 33.9%, 0%, 27.1%)
CIE-LAB	lab(50.12, -0.46, -39.36)
CIE-LCH	lch(50.12, 39.36, 269.32°)
OKLab	oklab(56.89% -0.0424 -0.1117)
OKLCH	oklch(56.89% 0.119 249.2)
XYZ	xyz(17.5181, 18.5214, 49.0966)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BBA #BA7637

analogous

#37BAB8 #377BBA #3739BA

triadic

#377BBA #BA377B #7BBA37

tetradic

#377BBA #B837BA #BA7637 #39BA37

square

#377BBA #B837BA #BA7637 #39BA37

split-complementary

#377BBA #BA3739 #BAB837

monochromatic

#1B3D5C #295C8B #377BBA #5F99D0 #8EB7DE

Accessibility & contrast

On white

4.46

#377BBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#377BBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BBA

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BBA	#FFFFFF	#000000	##000000
##377BBA	1.00	4.46	4.70	4.70
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7EBD

Deuteranopia (green-blind)

#4C72B9

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377bba;
/* rgb */ color: rgb(55, 123, 186);
/* oklch */ color: oklch(56.9% 0.119 249.2);

Tailwind

colors: {
  custom: {
    50: '#7da0cf',
    500: '#377bba',
    950: '#000000',
  },
}

SCSS

$custom: #377bba;
$custom-light: #7da0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#377bba",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 186
  },
  "hsl": {
    "h": 208.855,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56894,
    "c": 0.11942,
    "h": 249.2
  },
  "luminance": 0.18523
}

Semantic roles & 50–950 ramp

primary

#377BBA

secondary

#C8A585

accent

#914ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #377BBA

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

Preview Lab → · Contrast checker → · Palette generator →