#377BA3#377BA3

#377BA3 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.7% C 0.092 H 237.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#377BA3
RGB	rgb(55, 123, 163)
HSL	hsl(202, 50%, 43%)
HSV	hsv(202, 66%, 64%)
CMYK	cmyk(66.3%, 24.5%, 0%, 36.1%)
CIE-LAB	lab(49.03, -8.52, -27.74)
CIE-LCH	lch(49.03, 29.02, 252.92°)
OKLab	oklab(55.68% -0.0496 -0.0779)
OKLCH	oklch(55.68% 0.092 237.5)
XYZ	xyz(15.2668, 17.6209, 37.2398)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA3 #A35F37

analogous

#37A395 #377BA3 #3745A3

triadic

#377BA3 #A3377B #7BA337

tetradic

#377BA3 #9537A3 #A35F37 #45A337

square

#377BA3 #9537A3 #A35F37 #45A337

split-complementary

#377BA3 #A33745 #A39537

monochromatic

#183647 #285875 #377BA3 #529AC5 #80B5D4

Accessibility & contrast

On white

4.64

#377BA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#377BA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA3

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA3	#FFFFFF	#000000	##FFFFFF
##377BA3	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA5

Deuteranopia (green-blind)

#5970A2

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377ba3;
/* rgb */ color: rgb(55, 123, 163);
/* oklch */ color: oklch(55.7% 0.092 237.5);

Tailwind

colors: {
  custom: {
    50: '#7aa1be',
    500: '#377ba3',
    950: '#000000',
  },
}

SCSS

$custom: #377ba3;
$custom-light: #7aa1be;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba3",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 163
  },
  "hsl": {
    "h": 202.222,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55675,
    "c": 0.0924,
    "h": 237.5
  },
  "luminance": 0.17622
}

Semantic roles & 50–950 ramp

primary

#377BA3

secondary

#BE9278

accent

#824FD9

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA3

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

Preview Lab → · Contrast checker → · Palette generator →