#377B8A#377B8A

#377B8A is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 54.5% C 0.072 H 214.3°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#377B8A
RGB	rgb(55, 123, 138)
HSL	hsl(191, 43%, 38%)
HSV	hsv(191, 60%, 54%)
CMYK	cmyk(60.1%, 10.9%, 0%, 45.9%)
CIE-LAB	lab(48.02, -16.74, -14.62)
CIE-LCH	lch(48.02, 22.23, 221.14°)
OKLab	oklab(54.53% -0.0594 -0.0405)
OKLCH	oklch(54.53% 0.072 214.3)
XYZ	xyz(13.2441, 16.8118, 26.5869)
Luminance	0.1681 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377B8A #8A4637

analogous

#378A6F #377B8A #37528A

triadic

#377B8A #8A377B #7B8A37

tetradic

#377B8A #6F378A #8A4637 #528A37

square

#377B8A #6F378A #8A4637 #528A37

split-complementary

#377B8A #8A3752 #8A6F37

monochromatic

#142D32 #26545E #377B8A #48A2B6 #74B8C8

Accessibility & contrast

On white

4.81

#377B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#377B8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #377B8A

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377B8A	#FFFFFF	#000000	##FFFFFF
##377B8A	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#70778B

Deuteranopia (green-blind)

#646E8A

Tritanopia (blue-blind)

#008180

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #377b8a;
/* rgb */ color: rgb(55, 123, 138);
/* oklch */ color: oklch(54.5% 0.072 214.3);

Tailwind

colors: {
  custom: {
    50: '#76a1ac',
    500: '#377b8a',
    950: '#000000',
  },
}

SCSS

$custom: #377b8a;
$custom-light: #76a1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#377b8a",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 138
  },
  "hsl": {
    "h": 190.843,
    "s": 43.005,
    "l": 37.843
  },
  "oklch": {
    "l": 0.54534,
    "c": 0.0719,
    "h": 214.3
  },
  "luminance": 0.16813
}

Semantic roles & 50–950 ramp

primary

#377B8A

secondary

#B0796D

accent

#6C55D3

background

#F7F9FA

surface

#EEF2F4

border

#C9CCCE

text

#090F10

muted

#7B7E7F

Preview Lab

Preview with #377B8A

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

Preview Lab → · Contrast checker → · Palette generator →