#377CA1#377CA1

#377CA1 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.8% C 0.090 H 235.0°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377CA1
RGB	rgb(55, 124, 161)
HSL	hsl(201, 49%, 42%)
HSV	hsv(201, 66%, 63%)
CMYK	cmyk(65.8%, 23%, 0%, 36.9%)
CIE-LAB	lab(49.25, -9.78, -26.23)
CIE-LCH	lch(49.25, 28.00, 249.56°)
OKLab	oklab(55.82% -0.0514 -0.0736)
OKLCH	oklch(55.82% 0.09 235)
XYZ	xyz(15.2137, 17.7992, 36.3451)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CA1 #A15C37

analogous

#37A191 #377CA1 #3747A1

triadic

#377CA1 #A1377C #7CA137

tetradic

#377CA1 #9137A1 #A15C37 #47A137

square

#377CA1 #9137A1 #A15C37 #47A137

split-complementary

#377CA1 #A13747 #A19137

monochromatic

#183646 #275973 #377CA1 #519CC4 #7FB6D3

Accessibility & contrast

On white

4.61

#377CA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#377CA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377CA1

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CA1	#FFFFFF	#000000	##FFFFFF
##377CA1	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA3

Deuteranopia (green-blind)

#5C70A0

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ca1;
/* rgb */ color: rgb(55, 124, 161);
/* oklch */ color: oklch(55.8% 0.090 235.0);

Tailwind

colors: {
  custom: {
    50: '#79a1bd',
    500: '#377ca1',
    950: '#000000',
  },
}

SCSS

$custom: #377ca1;
$custom-light: #79a1bd;
$custom-dark: #000000;

JSON

{
  "hex": "#377ca1",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 161
  },
  "hsl": {
    "h": 200.943,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.5582,
    "c": 0.08978,
    "h": 235
  },
  "luminance": 0.17801
}

Semantic roles & 50–950 ramp

primary

#377CA1

secondary

#BD8F77

accent

#7F4FD9

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #377CA1

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

Preview Lab → · Contrast checker → · Palette generator →