#2A57B6#2A57B6

#2A57B6 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.159 H 262.8°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#2A57B6
RGB	rgb(42, 87, 182)
HSL	hsl(221, 63%, 44%)
HSV	hsv(221, 77%, 71%)
CMYK	cmyk(76.9%, 52.2%, 0%, 28.6%)
CIE-LAB	lab(39.04, 19.05, -54.77)
CIE-LCH	lch(39.04, 57.99, 289.18°)
OKLab	oklab(48.11% -0.0198 -0.1577)
OKLCH	oklch(48.11% 0.159 262.8)
XYZ	xyz(12.8035, 10.6846, 45.6344)
Luminance	0.1069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57B6 #B6892A

analogous

#2A9DB6 #2A57B6 #432AB6

triadic

#2A57B6 #B62A57 #57B62A

tetradic

#2A57B6 #B62A9D #B6892A #2AB643

square

#2A57B6 #B62A9D #B6892A #2AB643

split-complementary

#2A57B6 #B6432A #9DB62A

monochromatic

#132753 #1F3F84 #2A57B6 #4876D5 #7A9BE0

Accessibility & contrast

On white

6.69

#2A57B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#2A57B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57B6

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57B6	#FFFFFF	#000000	##FFFFFF
##2A57B6	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1663B9

Deuteranopia (green-blind)

#0056B4

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2a57b6;
/* rgb */ color: rgb(42, 87, 182);
/* oklch */ color: oklch(48.1% 0.159 262.8);

Tailwind

colors: {
  custom: {
    50: '#7885cd',
    500: '#2a57b6',
    950: '#000000',
  },
}

SCSS

$custom: #2a57b6;
$custom-light: #7885cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57b6",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 182
  },
  "hsl": {
    "h": 220.714,
    "s": 62.5,
    "l": 43.922
  },
  "oklch": {
    "l": 0.48111,
    "c": 0.15893,
    "h": 262.8
  },
  "luminance": 0.10686
}

Semantic roles & 50–950 ramp

primary

#2A57B6

secondary

#C8AD73

accent

#B142E6

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2A57B6

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

Preview Lab → · Contrast checker → · Palette generator →