#377CA5#377CA5

#377CA5 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.0% C 0.094 H 237.8°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#377CA5
RGB	rgb(55, 124, 165)
HSL	hsl(202, 50%, 43%)
HSV	hsv(202, 67%, 65%)
CMYK	cmyk(66.7%, 24.8%, 0%, 35.3%)
CIE-LAB	lab(49.43, -8.42, -28.29)
CIE-LCH	lch(49.43, 29.52, 253.43°)
OKLab	oklab(56.02% -0.05 -0.0795)
OKLCH	oklch(56.02% 0.094 237.8)
XYZ	xyz(15.5721, 17.9425, 38.2326)
Luminance	0.1794 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CA5 #A56037

analogous

#37A597 #377CA5 #3745A5

triadic

#377CA5 #A5377C #7CA537

tetradic

#377CA5 #9737A5 #A56037 #45A537

square

#377CA5 #9737A5 #A56037 #45A537

split-complementary

#377CA5 #A53745 #A59737

monochromatic

#183749 #285A77 #377CA5 #539BC6 #81B6D5

Accessibility & contrast

On white

4.58

#377CA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#377CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CA5

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CA5	#FFFFFF	#000000	##000000
##377CA5	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697CA7

Deuteranopia (green-blind)

#5A71A4

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ca5;
/* rgb */ color: rgb(55, 124, 165);
/* oklch */ color: oklch(56.0% 0.094 237.8);

Tailwind

colors: {
  custom: {
    50: '#7aa1c0',
    500: '#377ca5',
    950: '#000000',
  },
}

SCSS

$custom: #377ca5;
$custom-light: #7aa1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#377ca5",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 165
  },
  "hsl": {
    "h": 202.364,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.56017,
    "c": 0.09394,
    "h": 237.8
  },
  "luminance": 0.17944
}

Semantic roles & 50–950 ramp

primary

#377CA5

secondary

#BF9379

accent

#824EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #377CA5

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

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