#2878B3#2878B3

#2878B3 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.3% C 0.119 H 245.1°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#2878B3
RGB	rgb(40, 120, 179)
HSL	hsl(205, 63%, 43%)
HSV	hsv(205, 78%, 70%)
CMYK	cmyk(77.7%, 33%, 0%, 29.8%)
CIE-LAB	lab(48.43, -3.24, -38.02)
CIE-LCH	lch(48.43, 38.15, 265.13°)
OKLab	oklab(55.32% -0.0502 -0.1079)
OKLCH	oklch(55.32% 0.119 245.1)
XYZ	xyz(15.7251, 17.1369, 45.1181)
Luminance	0.1714 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2878B3 #B36328

analogous

#28B3A8 #2878B3 #2832B3

triadic

#2878B3 #B32878 #78B328

tetradic

#2878B3 #A828B3 #B36328 #32B328

square

#2878B3 #A828B3 #B36328 #32B328

split-complementary

#2878B3 #B32832 #B3A828

monochromatic

#12354F #1D5681 #2878B3 #4397D5 #75B3E0

Accessibility & contrast

On white

4.74

#2878B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#2878B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2878B3

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2878B3	#FFFFFF	#000000	##FFFFFF
##2878B3	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB6

Deuteranopia (green-blind)

#496DB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2878b3;
/* rgb */ color: rgb(40, 120, 179);
/* oklch */ color: oklch(55.3% 0.119 245.1);

Tailwind

colors: {
  custom: {
    50: '#779eca',
    500: '#2878b3',
    950: '#000000',
  },
}

SCSS

$custom: #2878b3;
$custom-light: #779eca;
$custom-dark: #000000;

JSON

{
  "hex": "#2878b3",
  "rgb": {
    "r": 40,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 205.468,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.55322,
    "c": 0.11905,
    "h": 245.1
  },
  "luminance": 0.17139
}

Semantic roles & 50–950 ramp

primary

#2878B3

secondary

#C8956F

accent

#8741E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2878B3

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

Preview Lab → · Contrast checker → · Palette generator →