#2879B1#2879B1

#2879B1 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.4% C 0.116 H 243.5°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#2879B1
RGB	rgb(40, 121, 177)
HSL	hsl(205, 63%, 43%)
HSV	hsv(205, 77%, 69%)
CMYK	cmyk(77.4%, 31.6%, 0%, 30.6%)
CIE-LAB	lab(48.63, -4.57, -36.54)
CIE-LCH	lch(48.63, 36.82, 262.87°)
OKLab	oklab(55.45% -0.0518 -0.1036)
OKLCH	oklch(55.45% 0.116 243.5)
XYZ	xyz(15.6452, 17.2983, 44.1008)
Luminance	0.1730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2879B1 #B16028

analogous

#28B1A5 #2879B1 #2834B1

triadic

#2879B1 #B12879 #79B128

tetradic

#2879B1 #A528B1 #B16028 #34B128

square

#2879B1 #A528B1 #B16028 #34B128

split-complementary

#2879B1 #B12834 #B1A528

monochromatic

#11354D #1D577F #2879B1 #4298D4 #74B4E0

Accessibility & contrast

On white

4.71

#2879B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#2879B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2879B1

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2879B1	#FFFFFF	#000000	##FFFFFF
##2879B1	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7BB3

Deuteranopia (green-blind)

#4C6EB0

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2879b1;
/* rgb */ color: rgb(40, 121, 177);
/* oklch */ color: oklch(55.4% 0.116 243.5);

Tailwind

colors: {
  custom: {
    50: '#769fc8',
    500: '#2879b1',
    950: '#000000',
  },
}

SCSS

$custom: #2879b1;
$custom-light: #769fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#2879b1",
  "rgb": {
    "r": 40,
    "g": 121,
    "b": 177
  },
  "hsl": {
    "h": 204.526,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.55449,
    "c": 0.11582,
    "h": 243.5
  },
  "luminance": 0.173
}

Semantic roles & 50–950 ramp

primary

#2879B1

secondary

#C7926E

accent

#8542E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2879B1

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

Preview Lab → · Contrast checker → · Palette generator →