#377BCA#377BCA

#377BCA is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.8% C 0.140 H 254.1°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#377BCA
RGB	rgb(55, 123, 202)
HSL	hsl(212, 58%, 50%)
HSV	hsv(212, 73%, 79%)
CMYK	cmyk(72.8%, 39.1%, 0%, 20.8%)
CIE-LAB	lab(50.97, 5.31, -47.19)
CIE-LCH	lch(50.97, 47.48, 276.42°)
OKLab	oklab(57.83% -0.0382 -0.1346)
OKLCH	oklch(57.83% 0.14 254.1)
XYZ	xyz(19.3152, 19.2403, 58.5614)
Luminance	0.1924 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BCA #CA8637

analogous

#37C4CA #377BCA #3C37CA

triadic

#377BCA #CA377B #7BCA37

tetradic

#377BCA #CA37C4 #CA8637 #37CA3C

square

#377BCA #CA37C4 #CA8637 #37CA3C

split-complementary

#377BCA #CA3C37 #C4CA37

monochromatic

#1C406A #295E9B #377BCA #679BD7 #98BBE4

Accessibility & contrast

On white

4.33

#377BCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#377BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BCA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BCA	#FFFFFF	#000000	##000000
##377BCA	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5681CD

Deuteranopia (green-blind)

#3F73C8

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377bca;
/* rgb */ color: rgb(55, 123, 202);
/* oklch */ color: oklch(57.8% 0.140 254.1);

Tailwind

colors: {
  custom: {
    50: '#80a0da',
    500: '#377bca',
    950: '#000000',
  },
}

SCSS

$custom: #377bca;
$custom-light: #80a0da;
$custom-dark: #000000;

JSON

{
  "hex": "#377bca",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 202
  },
  "hsl": {
    "h": 212.245,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.5783,
    "c": 0.1399,
    "h": 254.1
  },
  "luminance": 0.19242
}

Semantic roles & 50–950 ramp

primary

#377BCA

secondary

#CFB18E

accent

#9A46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377BCA

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

Preview Lab → · Contrast checker → · Palette generator →