#2C57B7#2C57B7

#2C57B7 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.160 H 263.4°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#2C57B7
RGB	rgb(44, 87, 183)
HSL	hsl(221, 61%, 45%)
HSV	hsv(221, 76%, 72%)
CMYK	cmyk(76%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.19, 19.67, -55.12)
CIE-LCH	lch(39.19, 58.52, 289.64°)
OKLab	oklab(48.26% -0.0183 -0.1587)
OKLCH	oklch(48.26% 0.16 263.4)
XYZ	xyz(12.9911, 10.7693, 46.1846)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2C57B7 #B78C2C

analogous

#2C9DB7 #2C57B7 #472CB7

triadic

#2C57B7 #B72C57 #57B72C

tetradic

#2C57B7 #B72C9D #B78C2C #2CB747

square

#2C57B7 #B72C9D #B78C2C #2CB747

split-complementary

#2C57B7 #B7472C #9DB72C

monochromatic

#142854 #204086 #2C57B7 #4C76D4 #7E9CE0

Accessibility & contrast

On white

6.66

#2C57B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#2C57B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2C57B7

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2C57B7	#FFFFFF	#000000	##FFFFFF
##2C57B7	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1463BA

Deuteranopia (green-blind)

#0056B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2c57b7;
/* rgb */ color: rgb(44, 87, 183);
/* oklch */ color: oklch(48.3% 0.160 263.4);

Tailwind

colors: {
  custom: {
    50: '#7985cd',
    500: '#2c57b7',
    950: '#000000',
  },
}

SCSS

$custom: #2c57b7;
$custom-light: #7985cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2c57b7",
  "rgb": {
    "r": 44,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 221.439,
    "s": 61.233,
    "l": 44.51
  },
  "oklch": {
    "l": 0.48264,
    "c": 0.15973,
    "h": 263.4
  },
  "luminance": 0.10771
}

Semantic roles & 50–950 ramp

primary

#2C57B7

secondary

#C8AF76

accent

#B343E4

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #2C57B7

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

Preview Lab → · Contrast checker → · Palette generator →