#2A57B3#2A57B3

#2A57B3 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.9% C 0.155 H 262.5°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#2A57B3
RGB	rgb(42, 87, 179)
HSL	hsl(220, 62%, 43%)
HSV	hsv(220, 77%, 70%)
CMYK	cmyk(76.5%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.83, 17.90, -53.35)
CIE-LCH	lch(38.83, 56.27, 288.55°)
OKLab	oklab(47.88% -0.0202 -0.1535)
OKLCH	oklch(47.88% 0.155 262.5)
XYZ	xyz(12.4968, 10.5619, 44.0191)
Luminance	0.1056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A57B3 #B3862A

analogous

#2A9BB3 #2A57B3 #412AB3

triadic

#2A57B3 #B32A57 #57B32A

tetradic

#2A57B3 #B32A9B #B3862A #2AB341

square

#2A57B3 #B32A9B #B3862A #2AB341

split-complementary

#2A57B3 #B3412A #9BB32A

monochromatic

#132750 #1E3F81 #2A57B3 #4675D4 #789ADF

Accessibility & contrast

On white

6.75

#2A57B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#2A57B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A57B3

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A57B3	#FFFFFF	#000000	##FFFFFF
##2A57B3	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C62B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2a57b3;
/* rgb */ color: rgb(42, 87, 179);
/* oklch */ color: oklch(47.9% 0.155 262.5);

Tailwind

colors: {
  custom: {
    50: '#7885ca',
    500: '#2a57b3',
    950: '#000000',
  },
}

SCSS

$custom: #2a57b3;
$custom-light: #7885ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2a57b3",
  "rgb": {
    "r": 42,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 220.292,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.47882,
    "c": 0.15482,
    "h": 262.5
  },
  "luminance": 0.10563
}

Semantic roles & 50–950 ramp

primary

#2A57B3

secondary

#C7AB72

accent

#B043E5

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2A57B3

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

Preview Lab → · Contrast checker → · Palette generator →