#377BA7#377BA7

#377BA7 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.097 H 240.1°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#377BA7
RGB	rgb(55, 123, 167)
HSL	hsl(204, 50%, 44%)
HSV	hsv(204, 67%, 65%)
CMYK	cmyk(67.1%, 26.3%, 0%, 34.5%)
CIE-LAB	lab(49.21, -7.15, -29.79)
CIE-LCH	lch(49.21, 30.64, 256.51°)
OKLab	oklab(55.88% -0.0483 -0.0838)
OKLCH	oklch(55.88% 0.097 240.1)
XYZ	xyz(15.6309, 17.7665, 39.1572)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA7 #A76337

analogous

#37A79B #377BA7 #3743A7

triadic

#377BA7 #A7377B #7BA737

tetradic

#377BA7 #9B37A7 #A76337 #43A737

square

#377BA7 #9B37A7 #A76337 #43A737

split-complementary

#377BA7 #A73743 #A79B37

monochromatic

#19374B #285979 #377BA7 #549AC7 #82B5D6

Accessibility & contrast

On white

4.61

#377BA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#377BA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA7

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA7	#FFFFFF	#000000	##FFFFFF
##377BA7	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BA9

Deuteranopia (green-blind)

#5770A6

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba7;
/* rgb */ color: rgb(55, 123, 167);
/* oklch */ color: oklch(55.9% 0.097 240.1);

Tailwind

colors: {
  custom: {
    50: '#7aa1c1',
    500: '#377ba7',
    950: '#000000',
  },
}

SCSS

$custom: #377ba7;
$custom-light: #7aa1c1;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba7",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 167
  },
  "hsl": {
    "h": 203.571,
    "s": 50.45,
    "l": 43.529
  },
  "oklch": {
    "l": 0.55876,
    "c": 0.09675,
    "h": 240.1
  },
  "luminance": 0.17768
}

Semantic roles & 50–950 ramp

primary

#377BA7

secondary

#C0957A

accent

#854EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA7

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

Preview Lab → · Contrast checker → · Palette generator →