#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
RGB	rgb(39, 120, 176)
HSL	hsl(205, 64%, 42%)
HSV	hsv(205, 78%, 69%)
CMYK	cmyk(77.8%, 31.8%, 0%, 31%)
CIE-LAB	lab(48.26, -4.46, -36.55)
CIE-LCH	lch(48.26, 36.83, 263.04°)
OKLab	oklab(55.13% -0.0516 -0.1037)
OKLCH	oklch(55.13% 0.116 243.5)
XYZ	xyz(15.3866, 16.9970, 43.5357)
Luminance	0.1700 (WCAG relative)
Temperature	cool
Family	cyan

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
##2778B0	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

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 →