#377CA9#377CA9

#377CA9 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.2% C 0.098 H 240.3°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#377CA9
RGB	rgb(55, 124, 169)
HSL	hsl(204, 51%, 44%)
HSV	hsv(204, 67%, 66%)
CMYK	cmyk(67.5%, 26.6%, 0%, 33.7%)
CIE-LAB	lab(49.61, -7.04, -30.34)
CIE-LCH	lch(49.61, 31.15, 256.94°)
OKLab	oklab(56.22% -0.0486 -0.0854)
OKLCH	oklch(56.22% 0.098 240.3)
XYZ	xyz(15.9419, 18.0904, 40.1801)
Luminance	0.1809 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CA9 #A96437

analogous

#37A99D #377CA9 #3743A9

triadic

#377CA9 #A9377C #7CA937

tetradic

#377CA9 #9D37A9 #A96437 #43A937

square

#377CA9 #9D37A9 #A96437 #43A937

split-complementary

#377CA9 #A93743 #A99D37

monochromatic

#19384D #285A7B #377CA9 #559BC8 #84B6D7

Accessibility & contrast

On white

4.55

#377CA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#377CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CA9

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CA9	#FFFFFF	#000000	##000000
##377CA9	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677CAB

Deuteranopia (green-blind)

#5871A8

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ca9;
/* rgb */ color: rgb(55, 124, 169);
/* oklch */ color: oklch(56.2% 0.098 240.3);

Tailwind

colors: {
  custom: {
    50: '#7ba1c2',
    500: '#377ca9',
    950: '#000000',
  },
}

SCSS

$custom: #377ca9;
$custom-light: #7ba1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ca9",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 169
  },
  "hsl": {
    "h": 203.684,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56218,
    "c": 0.09831,
    "h": 240.3
  },
  "luminance": 0.18092
}

Semantic roles & 50–950 ramp

primary

#377CA9

secondary

#C0977B

accent

#854DDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #377CA9

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

Preview Lab → · Contrast checker → · Palette generator →