#3A57BB#3A57BB

#3A57BB is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.161 H 267.9°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#3A57BB
RGB	rgb(58, 87, 187)
HSL	hsl(227, 53%, 48%)
HSV	hsv(227, 69%, 73%)
CMYK	cmyk(69%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(40.09, 23.06, -55.98)
CIE-LCH	lch(40.09, 60.55, 292.39°)
OKLab	oklab(49.2% -0.006 -0.161)
OKLCH	oklch(49.2% 0.161 267.9)
XYZ	xyz(14.1197, 11.3024, 48.4415)
Luminance	0.1130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A57BB #BB9E3A

analogous

#3A97BB #3A57BB #5E3ABB

triadic

#3A57BB #BB3A57 #57BB3A

tetradic

#3A57BB #BB3A97 #BB9E3A #3ABB5E

square

#3A57BB #BB3A97 #BB9E3A #3ABB5E

split-complementary

#3A57BB #BB5E3A #97BB3A

monochromatic

#1D2C5E #2C418C #3A57BB #637CCF #92A3DD

Accessibility & contrast

On white

6.44

#3A57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3A57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A57BB

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A57BB	#FFFFFF	#000000	##FFFFFF
##3A57BB	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F65BF

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3a57bb;
/* rgb */ color: rgb(58, 87, 187);
/* oklch */ color: oklch(49.2% 0.161 267.9);

Tailwind

colors: {
  custom: {
    50: '#8086d0',
    500: '#3a57bb',
    950: '#000000',
  },
}

SCSS

$custom: #3a57bb;
$custom-light: #8086d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a57bb",
  "rgb": {
    "r": 58,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 226.512,
    "s": 52.653,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49201,
    "c": 0.16107,
    "h": 267.9
  },
  "luminance": 0.11304
}

Semantic roles & 50–950 ramp

primary

#3A57BB

secondary

#C8BA88

accent

#BC4CDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3A57BB

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

Preview Lab → · Contrast checker → · Palette generator →