#2877B3#2877B3

#2877B3 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.1% C 0.120 H 245.7°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#2877B3
RGB	rgb(40, 119, 179)
HSL	hsl(206, 63%, 43%)
HSV	hsv(206, 78%, 70%)
CMYK	cmyk(77.7%, 33.5%, 0%, 29.8%)
CIE-LAB	lab(48.13, -2.64, -38.49)
CIE-LCH	lch(48.13, 38.58, 266.08°)
OKLab	oklab(55.08% -0.0493 -0.1093)
OKLCH	oklch(55.08% 0.12 245.7)
XYZ	xyz(15.6054, 16.8976, 45.0782)
Luminance	0.1690 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2877B3 #B36428

analogous

#28B3A9 #2877B3 #2832B3

triadic

#2877B3 #B32877 #77B328

tetradic

#2877B3 #A928B3 #B36428 #32B328

square

#2877B3 #A928B3 #B36428 #32B328

split-complementary

#2877B3 #B32832 #B3A928

monochromatic

#12344F #1D5681 #2877B3 #4396D5 #75B2E0

Accessibility & contrast

On white

4.79

#2877B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#2877B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2877B3

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2877B3	#FFFFFF	#000000	##FFFFFF
##2877B3	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B79B6

Deuteranopia (green-blind)

#476CB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2877b3;
/* rgb */ color: rgb(40, 119, 179);
/* oklch */ color: oklch(55.1% 0.120 245.7);

Tailwind

colors: {
  custom: {
    50: '#779dca',
    500: '#2877b3',
    950: '#000000',
  },
}

SCSS

$custom: #2877b3;
$custom-light: #779dca;
$custom-dark: #000000;

JSON

{
  "hex": "#2877b3",
  "rgb": {
    "r": 40,
    "g": 119,
    "b": 179
  },
  "hsl": {
    "h": 205.899,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55085,
    "c": 0.11993,
    "h": 245.7
  },
  "luminance": 0.16899
}

Semantic roles & 50–950 ramp

primary

#2877B3

secondary

#C8956F

accent

#8941E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2877B3

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

Preview Lab → · Contrast checker → · Palette generator →