#377BBA#377BBA

#377BBA is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.119 H 249.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX#377BBA
RGBrgb(55, 123, 186)
HSLhsl(209, 54%, 47%)
HSVhsv(209, 70%, 73%)
CMYKcmyk(70.4%, 33.9%, 0%, 27.1%)
CIE-LABlab(50.12, -0.46, -39.36)
CIE-LCHlch(50.12, 39.36, 269.32°)
OKLaboklab(56.89% -0.0424 -0.1117)
OKLCHoklch(56.89% 0.119 249.2)
XYZxyz(17.5181, 18.5214, 49.0966)
Luminance0.1852 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377BBA #BA7637
analogous
#37BAB8 #377BBA #3739BA
triadic
#377BBA #BA377B #7BBA37
tetradic
#377BBA #B837BA #BA7637 #39BA37
square
#377BBA #B837BA #BA7637 #39BA37
split-complementary
#377BBA #BA3739 #BAB837
monochromatic
#1B3D5C #295C8B #377BBA #5F99D0 #8EB7DE

Accessibility & contrast

On white

4.46
#377BBA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.70
#377BBA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BBA
4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377BBA#FFFFFF#000000##000000
##377BBA1.004.464.704.70
#FFFFFF4.461.0021.0021.00
#0000004.7021.001.001.00
##0000004.7021.001.001.00

Color blindness preview

Protanopia (red-blind)
#5F7EBD
Deuteranopia (green-blind)
#4C72B9
Tritanopia (blue-blind)
#008A92
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #377bba;
/* rgb */ color: rgb(55, 123, 186);
/* oklch */ color: oklch(56.9% 0.119 249.2);
Tailwind
colors: {
  custom: {
    50: '#7da0cf',
    500: '#377bba',
    950: '#000000',
  },
}
SCSS
$custom: #377bba;
$custom-light: #7da0cf;
$custom-dark: #000000;
JSON
{
  "hex": "#377bba",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 186
  },
  "hsl": {
    "h": 208.855,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56894,
    "c": 0.11942,
    "h": 249.2
  },
  "luminance": 0.18523
}

Semantic roles & 50–950 ramp

primary
#377BBA
secondary
#C8A585
accent
#914ADE
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0E14
muted
#7C7E82

Preview Lab

Preview with #377BBA

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

Preview Lab → · Contrast checker → · Palette generator →

#377BBA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva