#2778B0#2778B0

#2778B0 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.116 H 243.5°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX#2778B0
RGBrgb(39, 120, 176)
HSLhsl(205, 64%, 42%)
HSVhsv(205, 78%, 69%)
CMYKcmyk(77.8%, 31.8%, 0%, 31%)
CIE-LABlab(48.26, -4.46, -36.55)
CIE-LCHlch(48.26, 36.83, 263.04°)
OKLaboklab(55.13% -0.0516 -0.1037)
OKLCHoklch(55.13% 0.116 243.5)
XYZxyz(15.3866, 16.9970, 43.5357)
Luminance0.1700 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2778B0 #B05F27
analogous
#27B0A4 #2778B0 #2733B0
triadic
#2778B0 #B02778 #78B027
tetradic
#2778B0 #A427B0 #B05F27 #33B027
square
#2778B0 #A427B0 #B05F27 #33B027
split-complementary
#2778B0 #B02733 #B0A427
monochromatic
#11344C #1C567E #2778B0 #4098D5 #72B3E0

Accessibility & contrast

On white

4.77
#2778B0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.40
#2778B0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2778B0
4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2778B0#FFFFFF#000000##FFFFFF
##2778B01.004.774.404.77
#FFFFFF4.771.0021.001.00
#0000004.4021.001.0021.00
##FFFFFF4.771.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5E7AB2
Deuteranopia (green-blind)
#4B6DAF
Tritanopia (blue-blind)
#00868C
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #2778b0;
/* rgb */ color: rgb(39, 120, 176);
/* oklch */ color: oklch(55.1% 0.116 243.5);
Tailwind
colors: {
  custom: {
    50: '#769ec8',
    500: '#2778b0',
    950: '#000000',
  },
}
SCSS
$custom: #2778b0;
$custom-light: #769ec8;
$custom-dark: #000000;
JSON
{
  "hex": "#2778b0",
  "rgb": {
    "r": 39,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 204.526,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.55127,
    "c": 0.11582,
    "h": 243.5
  },
  "luminance": 0.16999
}

Semantic roles & 50–950 ramp

primary
#2778B0
secondary
#C7916C
accent
#8541E7
background
#F7F9FC
surface
#EEF2F8
border
#C9CCD1
text
#0A0E13
muted
#7C7E82

Preview Lab

Preview with #2778B0

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

Preview Lab → · Contrast checker → · Palette generator →

#2778B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva