#1A57B4#1A57B4

#1A57B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.5% C 0.160 H 259.3°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#1A57B4
RGB	rgb(26, 87, 180)
HSL	hsl(216, 75%, 40%)
HSV	hsv(216, 86%, 71%)
CMYK	cmyk(85.6%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(38.43, 16.71, -54.61)
CIE-LCH	lch(38.43, 57.11, 287.01°)
OKLab	oklab(47.46% -0.0298 -0.1574)
OKLCH	oklch(47.46% 0.16 259.3)
XYZ	xyz(12.0694, 10.3298, 44.5289)
Luminance	0.1033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A57B4 #B4771A

analogous

#1AA4B4 #1A57B4 #2A1AB4

triadic

#1A57B4 #B41A57 #57B41A

tetradic

#1A57B4 #B41AA4 #B4771A #1AB42A

square

#1A57B4 #B41AA4 #B4771A #1AB42A

split-complementary

#1A57B4 #B42A1A #A4B41A

monochromatic

#0B2349 #123D7F #1A57B4 #2B73E0 #6096E8

Accessibility & contrast

On white

6.85

#1A57B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1A57B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1A57B4

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A57B4	#FFFFFF	#000000	##FFFFFF
##1A57B4	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1762B7

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1a57b4;
/* rgb */ color: rgb(26, 87, 180);
/* oklch */ color: oklch(47.5% 0.160 259.3);

Tailwind

colors: {
  custom: {
    50: '#7385cb',
    500: '#1a57b4',
    950: '#000000',
  },
}

SCSS

$custom: #1a57b4;
$custom-light: #7385cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1a57b4",
  "rgb": {
    "r": 26,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 216.234,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47461,
    "c": 0.16024,
    "h": 259.3
  },
  "luminance": 0.10331
}

Semantic roles & 50–950 ramp

primary

#1A57B4

secondary

#CCA05D

accent

#A736F1

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1A57B4

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

Preview Lab → · Contrast checker → · Palette generator →