#2878B0#2878B0

#2878B0 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.2% C 0.115 H 243.7°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#2878B0
RGB	rgb(40, 120, 176)
HSL	hsl(205, 63%, 42%)
HSV	hsv(205, 77%, 69%)
CMYK	cmyk(77.3%, 31.8%, 0%, 31%)
CIE-LAB	lab(48.28, -4.34, -36.51)
CIE-LCH	lch(48.28, 36.77, 263.21°)
OKLab	oklab(55.15% -0.0511 -0.1035)
OKLCH	oklch(55.15% 0.115 243.7)
XYZ	xyz(15.4250, 17.0168, 43.5375)
Luminance	0.1702 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2878B0 #B06028

analogous

#28B0A4 #2878B0 #2834B0

triadic

#2878B0 #B02878 #78B028

tetradic

#2878B0 #A428B0 #B06028 #34B028

square

#2878B0 #A428B0 #B06028 #34B028

split-complementary

#2878B0 #B02834 #B0A428

monochromatic

#11344C #1D567E #2878B0 #4198D4 #73B3DF

Accessibility & contrast

On white

4.77

#2878B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#2878B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2878B0

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2878B0	#FFFFFF	#000000	##FFFFFF
##2878B0	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB2

Deuteranopia (green-blind)

#4B6DAF

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2878b0;
/* rgb */ color: rgb(40, 120, 176);
/* oklch */ color: oklch(55.2% 0.115 243.7);

Tailwind

colors: {
  custom: {
    50: '#769ec8',
    500: '#2878b0',
    950: '#000000',
  },
}

SCSS

$custom: #2878b0;
$custom-light: #769ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2878b0",
  "rgb": {
    "r": 40,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 204.706,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.55154,
    "c": 0.11548,
    "h": 243.7
  },
  "luminance": 0.17019
}

Semantic roles & 50–950 ramp

primary

#2878B0

secondary

#C6926D

accent

#8542E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2878B0

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

Preview Lab → · Contrast checker → · Palette generator →