#377BA6#377BA6

#377BA6 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.096 H 239.5°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#377BA6
RGB	rgb(55, 123, 166)
HSL	hsl(203, 50%, 43%)
HSV	hsv(203, 67%, 65%)
CMYK	cmyk(66.9%, 25.9%, 0%, 34.9%)
CIE-LAB	lab(49.17, -7.49, -29.28)
CIE-LCH	lch(49.17, 30.22, 255.65°)
OKLab	oklab(55.83% -0.0486 -0.0824)
OKLCH	oklch(55.83% 0.096 239.5)
XYZ	xyz(15.5388, 17.7297, 38.6723)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA6 #A66237

analogous

#37A699 #377BA6 #3744A6

triadic

#377BA6 #A6377B #7BA637

tetradic

#377BA6 #9937A6 #A66237 #44A637

square

#377BA6 #9937A6 #A66237 #44A637

split-complementary

#377BA6 #A63744 #A69937

monochromatic

#19374A #285978 #377BA6 #549AC6 #82B5D6

Accessibility & contrast

On white

4.62

#377BA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#377BA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA6

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA6	#FFFFFF	#000000	##FFFFFF
##377BA6	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BA8

Deuteranopia (green-blind)

#5870A5

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba6;
/* rgb */ color: rgb(55, 123, 166);
/* oklch */ color: oklch(55.8% 0.096 239.5);

Tailwind

colors: {
  custom: {
    50: '#7aa1c0',
    500: '#377ba6',
    950: '#000000',
  },
}

SCSS

$custom: #377ba6;
$custom-light: #7aa1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba6",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 166
  },
  "hsl": {
    "h": 203.243,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55825,
    "c": 0.09564,
    "h": 239.5
  },
  "luminance": 0.17731
}

Semantic roles & 50–950 ramp

primary

#377BA6

secondary

#BF957A

accent

#844EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA6

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

Preview Lab → · Contrast checker → · Palette generator →