#377ABB#377ABB

#377ABB is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.7% C 0.122 H 250.3°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#377ABB
RGB	rgb(55, 122, 187)
HSL	hsl(210, 55%, 47%)
HSV	hsv(210, 71%, 73%)
CMYK	cmyk(70.6%, 34.8%, 0%, 26.7%)
CIE-LAB	lab(49.88, 0.50, -40.32)
CIE-LCH	lch(49.88, 40.32, 270.70°)
OKLab	oklab(56.72% -0.0411 -0.1145)
OKLCH	oklch(56.72% 0.122 250.3)
XYZ	xyz(17.5014, 18.3173, 49.6173)
Luminance	0.1832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ABB #BB7837

analogous

#37BBBA #377ABB #3738BB

triadic

#377ABB #BB377A #7ABB37

tetradic

#377ABB #BA37BB #BB7837 #38BB37

square

#377ABB #BA37BB #BB7837 #38BB37

split-complementary

#377ABB #BB3738 #BBBA37

monochromatic

#1B3C5C #295B8C #377ABB #5F98D0 #8EB7DE

Accessibility & contrast

On white

4.50

#377ABB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#377ABB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ABB

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ABB	#FFFFFF	#000000	##000000
##377ABB	1.00	4.50	4.66	4.66
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7DBE

Deuteranopia (green-blind)

#4A71BA

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377abb;
/* rgb */ color: rgb(55, 122, 187);
/* oklch */ color: oklch(56.7% 0.122 250.3);

Tailwind

colors: {
  custom: {
    50: '#7da0d0',
    500: '#377abb',
    950: '#000000',
  },
}

SCSS

$custom: #377abb;
$custom-light: #7da0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#377abb",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 187
  },
  "hsl": {
    "h": 209.545,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56719,
    "c": 0.12163,
    "h": 250.3
  },
  "luminance": 0.18319
}

Semantic roles & 50–950 ramp

primary

#377ABB

secondary

#C9A685

accent

#934ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #377ABB

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

Preview Lab → · Contrast checker → · Palette generator →