#377BBE#377BBE

#377BBE is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.1% C 0.124 H 250.6°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#377BBE
RGB	rgb(55, 123, 190)
HSL	hsl(210, 55%, 48%)
HSV	hsv(210, 71%, 75%)
CMYK	cmyk(71.1%, 35.3%, 0%, 25.5%)
CIE-LAB	lab(50.33, 0.97, -41.34)
CIE-LCH	lch(50.33, 41.35, 271.34°)
OKLab	oklab(57.12% -0.0413 -0.1174)
OKLCH	oklch(57.12% 0.124 250.6)
XYZ	xyz(17.9493, 18.6939, 51.3675)
Luminance	0.1870 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BBE #BE7A37

analogous

#37BEBD #377BBE #3737BE

triadic

#377BBE #BE377B #7BBE37

tetradic

#377BBE #BD37BE #BE7A37 #37BE37

square

#377BBE #BD37BE #BE7A37 #37BE37

split-complementary

#377BBE #BE3737 #BEBD37

monochromatic

#1C3E5F #295C8F #377BBE #619AD1 #90B8DF

Accessibility & contrast

On white

4.43

#377BBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#377BBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BBE

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BBE	#FFFFFF	#000000	##000000
##377BBE	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7FC1

Deuteranopia (green-blind)

#4972BD

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377bbe;
/* rgb */ color: rgb(55, 123, 190);
/* oklch */ color: oklch(57.1% 0.124 250.6);

Tailwind

colors: {
  custom: {
    50: '#7ea0d2',
    500: '#377bbe',
    950: '#000000',
  },
}

SCSS

$custom: #377bbe;
$custom-light: #7ea0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#377bbe",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 190
  },
  "hsl": {
    "h": 209.778,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.57121,
    "c": 0.12448,
    "h": 250.6
  },
  "luminance": 0.18696
}

Semantic roles & 50–950 ramp

primary

#377BBE

secondary

#CAA887

accent

#9349DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #377BBE

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

Preview Lab → · Contrast checker → · Palette generator →