#377AB9#377AB9

#377AB9 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.6% C 0.119 H 249.5°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#377AB9
RGB	rgb(55, 122, 185)
HSL	hsl(209, 54%, 47%)
HSV	hsv(209, 70%, 73%)
CMYK	cmyk(70.3%, 34.1%, 0%, 27.5%)
CIE-LAB	lab(49.78, -0.22, -39.33)
CIE-LCH	lch(49.78, 39.33, 269.68°)
OKLab	oklab(56.61% -0.0416 -0.1116)
OKLCH	oklch(56.61% 0.119 249.5)
XYZ	xyz(17.2888, 18.2322, 48.4976)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AB9 #B97637

analogous

#37B9B7 #377AB9 #3739B9

triadic

#377AB9 #B9377A #7AB937

tetradic

#377AB9 #B737B9 #B97637 #39B937

square

#377AB9 #B737B9 #B97637 #39B937

split-complementary

#377AB9 #B93739 #B9B737

monochromatic

#1B3C5B #295B8A #377AB9 #5E98CF #8DB6DD

Accessibility & contrast

On white

4.52

#377AB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#377AB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AB9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AB9	#FFFFFF	#000000	##000000
##377AB9	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7DBC

Deuteranopia (green-blind)

#4B71B8

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ab9;
/* rgb */ color: rgb(55, 122, 185);
/* oklch */ color: oklch(56.6% 0.119 249.5);

Tailwind

colors: {
  custom: {
    50: '#7da0ce',
    500: '#377ab9',
    950: '#000000',
  },
}

SCSS

$custom: #377ab9;
$custom-light: #7da0ce;
$custom-dark: #000000;

JSON

{
  "hex": "#377ab9",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 185
  },
  "hsl": {
    "h": 209.077,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56605,
    "c": 0.11911,
    "h": 249.5
  },
  "luminance": 0.18234
}

Semantic roles & 50–950 ramp

primary

#377AB9

secondary

#C8A584

accent

#924ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377AB9

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

Preview Lab → · Contrast checker → · Palette generator →