#2778B1#2778B1

#2778B1 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.2% C 0.117 H 244.0°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#2778B1
RGB	rgb(39, 120, 177)
HSL	hsl(205, 64%, 42%)
HSV	hsv(205, 78%, 69%)
CMYK	cmyk(78%, 32.2%, 0%, 30.6%)
CIE-LAB	lab(48.31, -4.09, -37.06)
CIE-LCH	lch(48.31, 37.28, 263.69°)
OKLab	oklab(55.18% -0.0513 -0.1051)
OKLCH	oklch(55.18% 0.117 244)
XYZ	xyz(15.4859, 17.0368, 44.0587)
Luminance	0.1704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2778B1 #B16027

analogous

#27B1A5 #2778B1 #2733B1

triadic

#2778B1 #B12778 #78B127

tetradic

#2778B1 #A527B1 #B16027 #33B127

square

#2778B1 #A527B1 #B16027 #33B127

split-complementary

#2778B1 #B12733 #B1A527

monochromatic

#11344D #1C567F #2778B1 #4098D5 #72B3E0

Accessibility & contrast

On white

4.76

#2778B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#2778B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2778B1

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2778B1	#FFFFFF	#000000	##FFFFFF
##2778B1	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB3

Deuteranopia (green-blind)

#4A6DB0

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2778b1;
/* rgb */ color: rgb(39, 120, 177);
/* oklch */ color: oklch(55.2% 0.117 244.0);

Tailwind

colors: {
  custom: {
    50: '#769ec8',
    500: '#2778b1',
    950: '#000000',
  },
}

SCSS

$custom: #2778b1;
$custom-light: #769ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2778b1",
  "rgb": {
    "r": 39,
    "g": 120,
    "b": 177
  },
  "hsl": {
    "h": 204.783,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.55183,
    "c": 0.11699,
    "h": 244
  },
  "luminance": 0.17039
}

Semantic roles & 50–950 ramp

primary

#2778B1

secondary

#C7926D

accent

#8541E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2778B1

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

Preview Lab → · Contrast checker → · Palette generator →