#2A57B2#2A57B2

#2A57B2 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.8% C 0.153 H 262.4°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#2A57B2
RGB	rgb(42, 87, 178)
HSL	hsl(220, 62%, 43%)
HSV	hsv(220, 76%, 70%)
CMYK	cmyk(76.4%, 51.1%, 0%, 30.2%)
CIE-LAB	lab(38.76, 17.52, -52.87)
CIE-LCH	lch(38.76, 55.70, 288.33°)
OKLab	oklab(47.81% -0.0203 -0.1521)
OKLCH	oklch(47.81% 0.153 262.4)
XYZ	xyz(12.3960, 10.5216, 43.4884)
Luminance	0.1052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57B2 #B2852A

analogous

#2A9BB2 #2A57B2 #412AB2

triadic

#2A57B2 #B22A57 #57B22A

tetradic

#2A57B2 #B22A9B #B2852A #2AB241

square

#2A57B2 #B22A9B #B2852A #2AB241

split-complementary

#2A57B2 #B2412A #9BB22A

monochromatic

#13274F #1E3F80 #2A57B2 #4675D3 #779ADF

Accessibility & contrast

On white

6.76

#2A57B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#2A57B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57B2

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57B2	#FFFFFF	#000000	##FFFFFF
##2A57B2	1.00	6.76	3.10	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E62B5

Deuteranopia (green-blind)

#0055B0

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2a57b2;
/* rgb */ color: rgb(42, 87, 178);
/* oklch */ color: oklch(47.8% 0.153 262.4);

Tailwind

colors: {
  custom: {
    50: '#7785ca',
    500: '#2a57b2',
    950: '#000000',
  },
}

SCSS

$custom: #2a57b2;
$custom-light: #7785ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57b2",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 178
  },
  "hsl": {
    "h": 220.147,
    "s": 61.818,
    "l": 43.137
  },
  "oklch": {
    "l": 0.47807,
    "c": 0.15345,
    "h": 262.4
  },
  "luminance": 0.10523
}

Semantic roles & 50–950 ramp

primary

#2A57B2

secondary

#C7AA71

accent

#AF43E5

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2A57B2

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

Preview Lab → · Contrast checker → · Palette generator →