#2C57B8#2C57B8

#2C57B8 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.161 H 263.5°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#2C57B8
RGB	rgb(44, 87, 184)
HSL	hsl(222, 61%, 45%)
HSV	hsv(222, 76%, 72%)
CMYK	cmyk(76.1%, 52.7%, 0%, 27.8%)
CIE-LAB	lab(39.26, 20.05, -55.59)
CIE-LCH	lch(39.26, 59.10, 289.84°)
OKLab	oklab(48.34% -0.0181 -0.1601)
OKLCH	oklch(48.34% 0.161 263.5)
XYZ	xyz(13.0955, 10.8111, 46.7347)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2C57B8 #B88D2C

analogous

#2C9DB8 #2C57B8 #472CB8

triadic

#2C57B8 #B82C57 #57B82C

tetradic

#2C57B8 #B82C9D #B88D2C #2CB847

square

#2C57B8 #B82C9D #B88D2C #2CB847

split-complementary

#2C57B8 #B8472C #9DB82C

monochromatic

#142855 #204087 #2C57B8 #4D76D4 #7E9CE0

Accessibility & contrast

On white

6.64

#2C57B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#2C57B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2C57B8

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2C57B8	#FFFFFF	#000000	##FFFFFF
##2C57B8	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1263BB

Deuteranopia (green-blind)

#0056B6

Tritanopia (blue-blind)

#006F7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2c57b8;
/* rgb */ color: rgb(44, 87, 184);
/* oklch */ color: oklch(48.3% 0.161 263.5);

Tailwind

colors: {
  custom: {
    50: '#7985ce',
    500: '#2c57b8',
    950: '#000000',
  },
}

SCSS

$custom: #2c57b8;
$custom-light: #7985ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2c57b8",
  "rgb": {
    "r": 44,
    "g": 87,
    "b": 184
  },
  "hsl": {
    "h": 221.571,
    "s": 61.404,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48341,
    "c": 0.1611,
    "h": 263.5
  },
  "luminance": 0.10813
}

Semantic roles & 50–950 ramp

primary

#2C57B8

secondary

#C9B077

accent

#B343E5

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2C57B8

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

Preview Lab → · Contrast checker → · Palette generator →