#377F9D#377F9D

#377F9D is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.4% C 0.085 H 228.5°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#377F9D
RGB	rgb(55, 127, 157)
HSL	hsl(198, 48%, 42%)
HSV	hsv(198, 65%, 62%)
CMYK	cmyk(65%, 19.1%, 0%, 38.4%)
CIE-LAB	lab(50.01, -12.82, -22.73)
CIE-LCH	lch(50.01, 26.10, 240.57°)
OKLab	oklab(56.37% -0.0562 -0.0635)
OKLCH	oklch(56.37% 0.085 228.5)
XYZ	xyz(15.2483, 18.4237, 34.6443)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377F9D #9D5537

analogous

#379D88 #377F9D #374C9D

triadic

#377F9D #9D377F #7F9D37

tetradic

#377F9D #88379D #9D5537 #4C9D37

square

#377F9D #88379D #9D5537 #4C9D37

split-complementary

#377F9D #9D374C #9D8837

monochromatic

#173642 #275A70 #377F9D #50A0C2 #7DB9D1

Accessibility & contrast

On white

4.48

#377F9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#377F9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377F9D

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377F9D	#FFFFFF	#000000	##000000
##377F9D	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7D9F

Deuteranopia (green-blind)

#61729D

Tritanopia (blue-blind)

#008889

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377f9d;
/* rgb */ color: rgb(55, 127, 157);
/* oklch */ color: oklch(56.4% 0.085 228.5);

Tailwind

colors: {
  custom: {
    50: '#79a4ba',
    500: '#377f9d',
    950: '#000000',
  },
}

SCSS

$custom: #377f9d;
$custom-light: #79a4ba;
$custom-dark: #000000;

JSON

{
  "hex": "#377f9d",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 157
  },
  "hsl": {
    "h": 197.647,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56366,
    "c": 0.08483,
    "h": 228.5
  },
  "luminance": 0.18425
}

Semantic roles & 50–950 ramp

primary

#377F9D

secondary

#BB8A75

accent

#7850D8

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #377F9D

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

Preview Lab → · Contrast checker → · Palette generator →