#377AA4#377AA4

#377AA4 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.5% C 0.094 H 239.2°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#377AA4
RGB	rgb(55, 122, 164)
HSL	hsl(203, 50%, 43%)
HSV	hsv(203, 66%, 64%)
CMYK	cmyk(66.5%, 25.6%, 0%, 35.7%)
CIE-LAB	lab(48.77, -7.60, -28.73)
CIE-LCH	lch(48.77, 29.72, 255.19°)
OKLab	oklab(55.48% -0.0482 -0.0808)
OKLCH	oklch(55.48% 0.094 239.2)
XYZ	xyz(15.2334, 17.4100, 37.6724)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AA4 #A46137

analogous

#37A497 #377AA4 #3743A4

triadic

#377AA4 #A4377A #7AA437

tetradic

#377AA4 #9737A4 #A46137 #43A437

square

#377AA4 #9737A4 #A46137 #43A437

split-complementary

#377AA4 #A43743 #A49737

monochromatic

#183648 #285876 #377AA4 #5399C5 #81B4D5

Accessibility & contrast

On white

4.68

#377AA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#377AA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #377AA4

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AA4	#FFFFFF	#000000	##FFFFFF
##377AA4	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677AA6

Deuteranopia (green-blind)

#586FA3

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377aa4;
/* rgb */ color: rgb(55, 122, 164);
/* oklch */ color: oklch(55.5% 0.094 239.2);

Tailwind

colors: {
  custom: {
    50: '#7aa0bf',
    500: '#377aa4',
    950: '#000000',
  },
}

SCSS

$custom: #377aa4;
$custom-light: #7aa0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#377aa4",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 164
  },
  "hsl": {
    "h": 203.119,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55484,
    "c": 0.09408,
    "h": 239.2
  },
  "luminance": 0.17412
}

Semantic roles & 50–950 ramp

primary

#377AA4

secondary

#BE9379

accent

#844FD9

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AA4

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

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