#2C57B1#2C57B1

#2C57B1 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.8% C 0.151 H 262.8°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#2C57B1
RGB	rgb(44, 87, 177)
HSL	hsl(221, 60%, 43%)
HSV	hsv(221, 75%, 69%)
CMYK	cmyk(75.1%, 50.8%, 0%, 30.6%)
CIE-LAB	lab(38.77, 17.38, -52.27)
CIE-LCH	lch(38.77, 55.08, 288.39°)
OKLab	oklab(47.81% -0.019 -0.1503)
OKLCH	oklch(47.81% 0.151 262.8)
XYZ	xyz(12.3799, 10.5248, 42.9655)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2C57B1 #B1862C

analogous

#2C99B1 #2C57B1 #442CB1

triadic

#2C57B1 #B12C57 #57B12C

tetradic

#2C57B1 #B12C99 #B1862C #2CB144

square

#2C57B1 #B12C99 #B1862C #2CB144

split-complementary

#2C57B1 #B1442C #99B12C

monochromatic

#14274F #203F80 #2C57B1 #4975D2 #7A9ADE

Accessibility & contrast

On white

6.76

#2C57B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#2C57B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2C57B1

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2C57B1	#FFFFFF	#000000	##FFFFFF
##2C57B1	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2062B4

Deuteranopia (green-blind)

#0056AF

Tritanopia (blue-blind)

#006D7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2c57b1;
/* rgb */ color: rgb(44, 87, 177);
/* oklch */ color: oklch(47.8% 0.151 262.8);

Tailwind

colors: {
  custom: {
    50: '#7885c9',
    500: '#2c57b1',
    950: '#000000',
  },
}

SCSS

$custom: #2c57b1;
$custom-light: #7885c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2c57b1",
  "rgb": {
    "r": 44,
    "g": 87,
    "b": 177
  },
  "hsl": {
    "h": 220.602,
    "s": 60.181,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4781,
    "c": 0.15149,
    "h": 262.8
  },
  "luminance": 0.10526
}

Semantic roles & 50–950 ramp

primary

#2C57B1

secondary

#C6AB73

accent

#B044E3

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2C57B1

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

Preview Lab → · Contrast checker → · Palette generator →