#2A57BD#2A57BD

#2A57BD is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.168 H 263.5°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#2A57BD
RGB	rgb(42, 87, 189)
HSL	hsl(222, 64%, 45%)
HSV	hsv(222, 78%, 74%)
CMYK	cmyk(77.8%, 54%, 0%, 25.9%)
CIE-LAB	lab(39.55, 21.73, -58.05)
CIE-LCH	lch(39.55, 61.99, 290.52°)
OKLab	oklab(48.65% -0.0191 -0.1673)
OKLCH	oklch(48.65% 0.168 263.5)
XYZ	xyz(13.5451, 10.9812, 49.5400)
Luminance	0.1098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57BD #BD902A

analogous

#2AA0BD #2A57BD #472ABD

triadic

#2A57BD #BD2A57 #57BD2A

tetradic

#2A57BD #BD2AA0 #BD902A #2ABD47

square

#2A57BD #BD2AA0 #BD902A #2ABD47

split-complementary

#2A57BD #BD472A #A0BD2A

monochromatic

#142959 #1F408B #2A57BD #4D77D7 #7F9DE3

Accessibility & contrast

On white

6.57

#2A57BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#2A57BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57BD

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57BD	#FFFFFF	#000000	##FFFFFF
##2A57BD	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C1

Deuteranopia (green-blind)

#0057BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2a57bd;
/* rgb */ color: rgb(42, 87, 189);
/* oklch */ color: oklch(48.7% 0.168 263.5);

Tailwind

colors: {
  custom: {
    50: '#7a85d2',
    500: '#2a57bd',
    950: '#000000',
  },
}

SCSS

$custom: #2a57bd;
$custom-light: #7a85d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57bd",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 221.633,
    "s": 63.636,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48654,
    "c": 0.16844,
    "h": 263.5
  },
  "luminance": 0.10983
}

Semantic roles & 50–950 ramp

primary

#2A57BD

secondary

#CBB278

accent

#B441E7

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #2A57BD

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

Preview Lab → · Contrast checker → · Palette generator →