#377EBC#377EBC

#377EBC is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.119 H 247.9°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX#377EBC
RGBrgb(55, 126, 188)
HSLhsl(208, 55%, 48%)
HSVhsv(208, 71%, 74%)
CMYKcmyk(70.7%, 33%, 0%, 26.3%)
CIE-LABlab(51.11, -1.55, -38.95)
CIE-LCHlch(51.11, 38.99, 267.73°)
OKLaboklab(57.7% -0.0447 -0.1104)
OKLCHoklch(57.7% 0.119 247.9)
XYZxyz(18.1101, 19.3628, 50.3502)
Luminance0.1936 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377EBC #BC7537
analogous
#37BCB8 #377EBC #373BBC
triadic
#377EBC #BC377E #7EBC37
tetradic
#377EBC #B837BC #BC7537 #3BBC37
square
#377EBC #B837BC #BC7537 #3BBC37
split-complementary
#377EBC #BC373B #BCB837
monochromatic
#1B3F5D #295E8D #377EBC #609CD0 #8FB9DE

Accessibility & contrast

On white

4.31
#377EBC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.87
#377EBC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EBC
4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377EBC#FFFFFF#000000##000000
##377EBC1.004.314.874.87
#FFFFFF4.311.0021.0021.00
#0000004.8721.001.001.00
##0000004.8721.001.001.00

Color blindness preview

Protanopia (red-blind)
#6281BF
Deuteranopia (green-blind)
#4F74BB
Tritanopia (blue-blind)
#008D94
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #377ebc;
/* rgb */ color: rgb(55, 126, 188);
/* oklch */ color: oklch(57.7% 0.119 247.9);
Tailwind
colors: {
  custom: {
    50: '#7ea3d0',
    500: '#377ebc',
    950: '#000000',
  },
}
SCSS
$custom: #377ebc;
$custom-light: #7ea3d0;
$custom-dark: #000000;
JSON
{
  "hex": "#377ebc",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 188
  },
  "hsl": {
    "h": 207.97,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57702,
    "c": 0.11916,
    "h": 247.9
  },
  "luminance": 0.19365
}

Semantic roles & 50–950 ramp

primary
#377EBC
secondary
#C9A586
accent
#8F4ADE
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0F14
muted
#7C7E82

Preview Lab

Preview with #377EBC

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

Preview Lab → · Contrast checker → · Palette generator →

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