#2478B0#2478B0

#2478B0 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.0% C 0.117 H 243.0°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#2478B0
RGB	rgb(36, 120, 176)
HSL	hsl(204, 66%, 42%)
HSV	hsv(204, 80%, 69%)
CMYK	cmyk(79.5%, 31.8%, 0%, 31%)
CIE-LAB	lab(48.19, -4.80, -36.67)
CIE-LCH	lch(48.19, 36.98, 262.54°)
OKLab	oklab(55.05% -0.053 -0.104)
OKLCH	oklch(55.05% 0.117 243)
XYZ	xyz(15.2774, 16.9407, 43.5306)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2478B0 #B05C24

analogous

#24B0A2 #2478B0 #2432B0

triadic

#2478B0 #B02478 #78B024

tetradic

#2478B0 #A224B0 #B05C24 #32B024

square

#2478B0 #A224B0 #B05C24 #32B024

split-complementary

#2478B0 #B02432 #B0A224

monochromatic

#0F334A #1A557D #2478B0 #3A98D7 #6DB3E1

Accessibility & contrast

On white

4.79

#2478B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#2478B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2478B0

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2478B0	#FFFFFF	#000000	##FFFFFF
##2478B0	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E79B2

Deuteranopia (green-blind)

#4A6DAF

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2478b0;
/* rgb */ color: rgb(36, 120, 176);
/* oklch */ color: oklch(55.0% 0.117 243.0);

Tailwind

colors: {
  custom: {
    50: '#759ec8',
    500: '#2478b0',
    950: '#000000',
  },
}

SCSS

$custom: #2478b0;
$custom-light: #759ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2478b0",
  "rgb": {
    "r": 36,
    "g": 120,
    "b": 176
  },
  "hsl": {
    "h": 204,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.5505,
    "c": 0.11679,
    "h": 243
  },
  "luminance": 0.16943
}

Semantic roles & 50–950 ramp

primary

#2478B0

secondary

#C88E68

accent

#833FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2478B0

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

Preview Lab → · Contrast checker → · Palette generator →