#377CA3#377CA3

#377CA3 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.9% C 0.092 H 236.5°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#377CA3
RGB	rgb(55, 124, 163)
HSL	hsl(202, 50%, 43%)
HSV	hsv(202, 66%, 64%)
CMYK	cmyk(66.3%, 23.9%, 0%, 36.1%)
CIE-LAB	lab(49.34, -9.10, -27.27)
CIE-LCH	lch(49.34, 28.74, 251.55°)
OKLab	oklab(55.92% -0.0507 -0.0766)
OKLCH	oklch(55.92% 0.092 236.5)
XYZ	xyz(15.3915, 17.8703, 37.2814)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CA3 #A35E37

analogous

#37A394 #377CA3 #3746A3

triadic

#377CA3 #A3377C #7CA337

tetradic

#377CA3 #9437A3 #A35E37 #46A337

square

#377CA3 #9437A3 #A35E37 #46A337

split-complementary

#377CA3 #A33746 #A39437

monochromatic

#183647 #285975 #377CA3 #529BC5 #80B6D4

Accessibility & contrast

On white

4.59

#377CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#377CA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377CA3

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CA3	#FFFFFF	#000000	##FFFFFF
##377CA3	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA5

Deuteranopia (green-blind)

#5B71A2

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ca3;
/* rgb */ color: rgb(55, 124, 163);
/* oklch */ color: oklch(55.9% 0.092 236.5);

Tailwind

colors: {
  custom: {
    50: '#7aa1be',
    500: '#377ca3',
    950: '#000000',
  },
}

SCSS

$custom: #377ca3;
$custom-light: #7aa1be;
$custom-dark: #000000;

JSON

{
  "hex": "#377ca3",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 163
  },
  "hsl": {
    "h": 201.667,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55918,
    "c": 0.09183,
    "h": 236.5
  },
  "luminance": 0.17872
}

Semantic roles & 50–950 ramp

primary

#377CA3

secondary

#BE9178

accent

#814FD9

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #377CA3

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

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