#2478B1#2478B1

#2478B1 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.118 H 243.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#2478B1
RGB	rgb(36, 120, 177)
HSL	hsl(204, 66%, 42%)
HSV	hsv(204, 80%, 69%)
CMYK	cmyk(79.7%, 32.2%, 0%, 30.6%)
CIE-LAB	lab(48.24, -4.43, -37.17)
CIE-LCH	lch(48.24, 37.44, 263.20°)
OKLab	oklab(55.11% -0.0527 -0.1055)
OKLCH	oklch(55.11% 0.118 243.4)
XYZ	xyz(15.3767, 16.9805, 44.0536)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2478B1 #B15D24

analogous

#24B1A4 #2478B1 #2432B1

triadic

#2478B1 #B12478 #78B124

tetradic

#2478B1 #A424B1 #B15D24 #32B124

square

#2478B1 #A424B1 #B15D24 #32B124

split-complementary

#2478B1 #B12432 #B1A424

monochromatic

#0F334B #1A567E #2478B1 #3B98D7 #6EB3E1

Accessibility & contrast

On white

4.78

#2478B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#2478B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2478B1

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2478B1	#FFFFFF	#000000	##FFFFFF
##2478B1	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB3

Deuteranopia (green-blind)

#4A6DB0

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2478b1;
/* rgb */ color: rgb(36, 120, 177);
/* oklch */ color: oklch(55.1% 0.118 243.4);

Tailwind

colors: {
  custom: {
    50: '#759ec8',
    500: '#2478b1',
    950: '#000000',
  },
}

SCSS

$custom: #2478b1;
$custom-light: #759ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2478b1",
  "rgb": {
    "r": 36,
    "g": 120,
    "b": 177
  },
  "hsl": {
    "h": 204.255,
    "s": 66.197,
    "l": 41.765
  },
  "oklch": {
    "l": 0.55107,
    "c": 0.11796,
    "h": 243.4
  },
  "luminance": 0.16982
}

Semantic roles & 50–950 ramp

primary

#2478B1

secondary

#C88F69

accent

#843FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2478B1

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

Preview Lab → · Contrast checker → · Palette generator →