#377CBC#377CBC

#377CBC is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.121 H 249.3°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#377CBC
RGB	rgb(55, 124, 188)
HSL	hsl(209, 55%, 48%)
HSV	hsv(209, 71%, 74%)
CMYK	cmyk(70.7%, 34%, 0%, 26.3%)
CIE-LAB	lab(50.52, -0.35, -39.89)
CIE-LCH	lch(50.52, 39.89, 269.50°)
OKLab	oklab(57.24% -0.0428 -0.1132)
OKLCH	oklch(57.24% 0.121 249.3)
XYZ	xyz(17.8569, 18.8564, 50.2658)
Luminance	0.1886 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CBC #BC7737

analogous

#37BCB9 #377CBC #3739BC

triadic

#377CBC #BC377C #7CBC37

tetradic

#377CBC #B937BC #BC7737 #39BC37

square

#377CBC #B937BC #BC7737 #39BC37

split-complementary

#377CBC #BC3739 #BCB937

monochromatic

#1B3E5D #295D8D #377CBC #609AD0 #8FB8DE

Accessibility & contrast

On white

4.40

#377CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#377CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CBC

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CBC	#FFFFFF	#000000	##000000
##377CBC	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7FBF

Deuteranopia (green-blind)

#4C73BB

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377cbc;
/* rgb */ color: rgb(55, 124, 188);
/* oklch */ color: oklch(57.2% 0.121 249.3);

Tailwind

colors: {
  custom: {
    50: '#7ea1d0',
    500: '#377cbc',
    950: '#000000',
  },
}

SCSS

$custom: #377cbc;
$custom-light: #7ea1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#377cbc",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 188
  },
  "hsl": {
    "h": 208.872,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57238,
    "c": 0.121,
    "h": 249.3
  },
  "luminance": 0.18858
}

Semantic roles & 50–950 ramp

primary

#377CBC

secondary

#C9A686

accent

#914ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #377CBC

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

Preview Lab → · Contrast checker → · Palette generator →