#2A57BC#2A57BC

#2A57BC is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.6% C 0.167 H 263.4°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#2A57BC
RGB	rgb(42, 87, 188)
HSL	hsl(222, 63%, 45%)
HSV	hsv(222, 78%, 74%)
CMYK	cmyk(77.7%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(39.48, 21.35, -57.59)
CIE-LCH	lch(39.48, 61.42, 290.34°)
OKLab	oklab(48.58% -0.0192 -0.166)
OKLCH	oklch(48.58% 0.167 263.4)
XYZ	xyz(13.4369, 10.9379, 48.9703)
Luminance	0.1094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57BC #BC8F2A

analogous

#2AA0BC #2A57BC #462ABC

triadic

#2A57BC #BC2A57 #57BC2A

tetradic

#2A57BC #BC2AA0 #BC8F2A #2ABC46

square

#2A57BC #BC2AA0 #BC8F2A #2ABC46

split-complementary

#2A57BC #BC462A #A0BC2A

monochromatic

#142958 #1F408A #2A57BC #4C77D7 #7E9DE2

Accessibility & contrast

On white

6.59

#2A57BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#2A57BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57BC

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57BC	#FFFFFF	#000000	##FFFFFF
##2A57BC	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0364C0

Deuteranopia (green-blind)

#0057BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2a57bc;
/* rgb */ color: rgb(42, 87, 188);
/* oklch */ color: oklch(48.6% 0.167 263.4);

Tailwind

colors: {
  custom: {
    50: '#7a85d1',
    500: '#2a57bc',
    950: '#000000',
  },
}

SCSS

$custom: #2a57bc;
$custom-light: #7a85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57bc",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 221.507,
    "s": 63.478,
    "l": 45.098
  },
  "oklch": {
    "l": 0.48575,
    "c": 0.16709,
    "h": 263.4
  },
  "luminance": 0.10939
}

Semantic roles & 50–950 ramp

primary

#2A57BC

secondary

#CBB177

accent

#B441E7

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2A57BC

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

Preview Lab → · Contrast checker → · Palette generator →