#2A57B5#2A57B5

#2A57B5 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.158 H 262.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#2A57B5
RGB	rgb(42, 87, 181)
HSL	hsl(221, 62%, 44%)
HSV	hsv(221, 77%, 71%)
CMYK	cmyk(76.8%, 51.9%, 0%, 29%)
CIE-LAB	lab(38.97, 18.67, -54.30)
CIE-LCH	lch(38.97, 57.41, 288.97°)
OKLab	oklab(48.03% -0.02 -0.1563)
OKLCH	oklch(48.03% 0.158 262.7)
XYZ	xyz(12.7005, 10.6434, 45.0921)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57B5 #B5882A

analogous

#2A9CB5 #2A57B5 #432AB5

triadic

#2A57B5 #B52A57 #57B52A

tetradic

#2A57B5 #B52A9C #B5882A #2AB543

square

#2A57B5 #B52A9C #B5882A #2AB543

split-complementary

#2A57B5 #B5432A #9CB52A

monochromatic

#132752 #1E3F83 #2A57B5 #4875D4 #799BE0

Accessibility & contrast

On white

6.71

#2A57B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#2A57B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57B5

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57B5	#FFFFFF	#000000	##FFFFFF
##2A57B5	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1862B8

Deuteranopia (green-blind)

#0056B3

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2a57b5;
/* rgb */ color: rgb(42, 87, 181);
/* oklch */ color: oklch(48.0% 0.158 262.7);

Tailwind

colors: {
  custom: {
    50: '#7885cc',
    500: '#2a57b5',
    950: '#000000',
  },
}

SCSS

$custom: #2a57b5;
$custom-light: #7885cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57b5",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 220.576,
    "s": 62.332,
    "l": 43.725
  },
  "oklch": {
    "l": 0.48034,
    "c": 0.15757,
    "h": 262.7
  },
  "luminance": 0.10645
}

Semantic roles & 50–950 ramp

primary

#2A57B5

secondary

#C8AC73

accent

#B142E5

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2A57B5

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

Preview Lab → · Contrast checker → · Palette generator →