#377AB7#377AB7

#377AB7 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.5% C 0.117 H 248.8°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377AB7
RGB	rgb(55, 122, 183)
HSL	hsl(209, 54%, 47%)
HSV	hsv(209, 70%, 72%)
CMYK	cmyk(69.9%, 33.3%, 0%, 28.2%)
CIE-LAB	lab(49.68, -0.94, -38.34)
CIE-LCH	lch(49.68, 38.35, 268.60°)
OKLab	oklab(56.49% -0.0422 -0.1087)
OKLCH	oklch(56.49% 0.117 248.8)
XYZ	xyz(17.0791, 18.1484, 47.3934)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AB7 #B77437

analogous

#37B7B4 #377AB7 #373AB7

triadic

#377AB7 #B7377A #7AB737

tetradic

#377AB7 #B437B7 #B77437 #3AB737

square

#377AB7 #B437B7 #B77437 #3AB737

split-complementary

#377AB7 #B7373A #B7B437

monochromatic

#1B3B59 #295B88 #377AB7 #5D98CE #8CB6DC

Accessibility & contrast

On white

4.54

#377AB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#377AB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AB7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AB7	#FFFFFF	#000000	##000000
##377AB7	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7DBA

Deuteranopia (green-blind)

#4D71B6

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ab7;
/* rgb */ color: rgb(55, 122, 183);
/* oklch */ color: oklch(56.5% 0.117 248.8);

Tailwind

colors: {
  custom: {
    50: '#7da0cd',
    500: '#377ab7',
    950: '#000000',
  },
}

SCSS

$custom: #377ab7;
$custom-light: #7da0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377ab7",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 183
  },
  "hsl": {
    "h": 208.594,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56493,
    "c": 0.1166,
    "h": 248.8
  },
  "luminance": 0.1815
}

Semantic roles & 50–950 ramp

primary

#377AB7

secondary

#C7A383

accent

#904BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377AB7

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

Preview Lab → · Contrast checker → · Palette generator →