#377CB7#377CB7

#377CB7 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.115 H 247.3°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#377CB7
RGB	rgb(55, 124, 183)
HSL	hsl(208, 54%, 47%)
HSV	hsv(208, 70%, 72%)
CMYK	cmyk(69.9%, 32.2%, 0%, 28.2%)
CIE-LAB	lab(50.27, -2.13, -37.40)
CIE-LCH	lch(50.27, 37.46, 266.74°)
OKLab	oklab(56.96% -0.0442 -0.1059)
OKLCH	oklch(56.96% 0.115 247.3)
XYZ	xyz(17.3272, 18.6446, 47.4761)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CB7 #B77237

analogous

#37B7B2 #377CB7 #373CB7

triadic

#377CB7 #B7377C #7CB737

tetradic

#377CB7 #B237B7 #B77237 #3CB737

square

#377CB7 #B237B7 #B77237 #3CB737

split-complementary

#377CB7 #B7373C #B7B237

monochromatic

#1B3C59 #295C88 #377CB7 #5D9ACE #8CB7DC

Accessibility & contrast

On white

4.44

#377CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#377CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CB7

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CB7	#FFFFFF	#000000	##000000
##377CB7	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627EBA

Deuteranopia (green-blind)

#5072B6

Tritanopia (blue-blind)

#008A91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377cb7;
/* rgb */ color: rgb(55, 124, 183);
/* oklch */ color: oklch(57.0% 0.115 247.3);

Tailwind

colors: {
  custom: {
    50: '#7da1cd',
    500: '#377cb7',
    950: '#000000',
  },
}

SCSS

$custom: #377cb7;
$custom-light: #7da1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377cb7",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 183
  },
  "hsl": {
    "h": 207.656,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5696,
    "c": 0.1148,
    "h": 247.3
  },
  "luminance": 0.18646
}

Semantic roles & 50–950 ramp

primary

#377CB7

secondary

#C7A283

accent

#8E4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377CB7

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

Preview Lab → · Contrast checker → · Palette generator →