#377BA4#377BA4

#377BA4 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.093 H 238.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377BA4
RGB	rgb(55, 123, 164)
HSL	hsl(203, 50%, 43%)
HSV	hsv(203, 66%, 64%)
CMYK	cmyk(66.5%, 25%, 0%, 35.7%)
CIE-LAB	lab(49.08, -8.18, -28.25)
CIE-LCH	lch(49.08, 29.41, 253.86°)
OKLab	oklab(55.73% -0.0493 -0.0794)
OKLCH	oklch(55.73% 0.093 238.2)
XYZ	xyz(15.3568, 17.6569, 37.7136)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA4 #A46037

analogous

#37A496 #377BA4 #3744A4

triadic

#377BA4 #A4377B #7BA437

tetradic

#377BA4 #9637A4 #A46037 #44A437

square

#377BA4 #9637A4 #A46037 #44A437

split-complementary

#377BA4 #A43744 #A49637

monochromatic

#183648 #285976 #377BA4 #539AC5 #81B5D5

Accessibility & contrast

On white

4.63

#377BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#377BA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA4

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA4	#FFFFFF	#000000	##FFFFFF
##377BA4	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA6

Deuteranopia (green-blind)

#5970A3

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba4;
/* rgb */ color: rgb(55, 123, 164);
/* oklch */ color: oklch(55.7% 0.093 238.2);

Tailwind

colors: {
  custom: {
    50: '#7aa1bf',
    500: '#377ba4',
    950: '#000000',
  },
}

SCSS

$custom: #377ba4;
$custom-light: #7aa1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba4",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 164
  },
  "hsl": {
    "h": 202.569,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55725,
    "c": 0.09346,
    "h": 238.2
  },
  "luminance": 0.17658
}

Semantic roles & 50–950 ramp

primary

#377BA4

secondary

#BE9379

accent

#834FD9

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA4

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

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