#2878B1#2878B1

#2878B1 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.2% C 0.117 H 244.2°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#2878B1
RGB	rgb(40, 120, 177)
HSL	hsl(205, 63%, 43%)
HSV	hsv(205, 77%, 69%)
CMYK	cmyk(77.4%, 32.2%, 0%, 30.6%)
CIE-LAB	lab(48.33, -3.98, -37.02)
CIE-LCH	lch(48.33, 37.23, 263.87°)
OKLab	oklab(55.21% -0.0508 -0.105)
OKLCH	oklch(55.21% 0.117 244.2)
XYZ	xyz(15.5243, 17.0565, 44.0605)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2878B1 #B16128

analogous

#28B1A6 #2878B1 #2833B1

triadic

#2878B1 #B12878 #78B128

tetradic

#2878B1 #A628B1 #B16128 #33B128

square

#2878B1 #A628B1 #B16128 #33B128

split-complementary

#2878B1 #B12833 #B1A628

monochromatic

#11344D #1D567F #2878B1 #4297D4 #74B3E0

Accessibility & contrast

On white

4.76

#2878B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#2878B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2878B1

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2878B1	#FFFFFF	#000000	##FFFFFF
##2878B1	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: #2878b1;
/* rgb */ color: rgb(40, 120, 177);
/* oklch */ color: oklch(55.2% 0.117 244.2);

Tailwind

colors: {
  custom: {
    50: '#769ec8',
    500: '#2878b1',
    950: '#000000',
  },
}

SCSS

$custom: #2878b1;
$custom-light: #769ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2878b1",
  "rgb": {
    "r": 40,
    "g": 120,
    "b": 177
  },
  "hsl": {
    "h": 204.964,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.5521,
    "c": 0.11667,
    "h": 244.2
  },
  "luminance": 0.17058
}

Semantic roles & 50–950 ramp

primary

#2878B1

secondary

#C7936E

accent

#8642E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2878B1

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

Preview Lab → · Contrast checker → · Palette generator →