#1F53AC#1F53AC

#1F53AC is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.1% C 0.153 H 260.5°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F53AC
RGB	rgb(31, 83, 172)
HSL	hsl(218, 69%, 40%)
HSV	hsv(218, 82%, 67%)
CMYK	cmyk(82%, 51.7%, 0%, 32.5%)
CIE-LAB	lab(36.85, 16.63, -52.44)
CIE-LCH	lch(36.85, 55.01, 287.59°)
OKLab	oklab(46.11% -0.0253 -0.1511)
OKLCH	oklch(46.11% 0.153 260.5)
XYZ	xyz(11.1020, 9.4550, 40.2616)
Luminance	0.0946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F53AC #AC781F

analogous

#1F9AAC #1F53AC #311FAC

triadic

#1F53AC #AC1F53 #53AC1F

tetradic

#1F53AC #AC1F9A #AC781F #1FAC31

square

#1F53AC #AC1F9A #AC781F #1FAC31

split-complementary

#1F53AC #AC311F #9AAC1F

monochromatic

#0C2144 #163A78 #1F53AC #2F6ED9 #6392E3

Accessibility & contrast

On white

7.26

#1F53AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1F53AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F53AC

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F53AC	#FFFFFF	#000000	##FFFFFF
##1F53AC	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175DAF

Deuteranopia (green-blind)

#0051AA

Tritanopia (blue-blind)

#006977

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f53ac;
/* rgb */ color: rgb(31, 83, 172);
/* oklch */ color: oklch(46.1% 0.153 260.5);

Tailwind

colors: {
  custom: {
    50: '#7382c5',
    500: '#1f53ac',
    950: '#000000',
  },
}

SCSS

$custom: #1f53ac;
$custom-light: #7382c5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f53ac",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 172
  },
  "hsl": {
    "h": 217.872,
    "s": 69.458,
    "l": 39.804
  },
  "oklch": {
    "l": 0.46108,
    "c": 0.15318,
    "h": 260.5
  },
  "luminance": 0.09456
}

Semantic roles & 50–950 ramp

primary

#1F53AC

secondary

#C8A15F

accent

#AB3CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1F53AC

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

Preview Lab → · Contrast checker → · Palette generator →