#1F53AD#1F53AD

#1F53AD is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.2% C 0.155 H 260.6°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#1F53AD
RGB	rgb(31, 83, 173)
HSL	hsl(218, 70%, 40%)
HSV	hsv(218, 82%, 68%)
CMYK	cmyk(82.1%, 52%, 0%, 32.2%)
CIE-LAB	lab(36.92, 17.02, -52.91)
CIE-LCH	lch(36.92, 55.59, 287.83°)
OKLab	oklab(46.18% -0.0252 -0.1525)
OKLCH	oklch(46.18% 0.155 260.6)
XYZ	xyz(11.1984, 9.4936, 40.7693)
Luminance	0.0950 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F53AD #AD791F

analogous

#1F9AAD #1F53AD #321FAD

triadic

#1F53AD #AD1F53 #53AD1F

tetradic

#1F53AD #AD1F9A #AD791F #1FAD32

square

#1F53AD #AD1F9A #AD791F #1FAD32

split-complementary

#1F53AD #AD321F #9AAD1F

monochromatic

#0C2145 #163A79 #1F53AD #2F6EDA #6392E3

Accessibility & contrast

On white

7.24

#1F53AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1F53AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F53AD

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F53AD	#FFFFFF	#000000	##FFFFFF
##1F53AD	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#155EB0

Deuteranopia (green-blind)

#0051AB

Tritanopia (blue-blind)

#006978

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f53ad;
/* rgb */ color: rgb(31, 83, 173);
/* oklch */ color: oklch(46.2% 0.155 260.6);

Tailwind

colors: {
  custom: {
    50: '#7382c6',
    500: '#1f53ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f53ad;
$custom-light: #7382c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f53ad",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 173
  },
  "hsl": {
    "h": 218.028,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.46185,
    "c": 0.15454,
    "h": 260.6
  },
  "luminance": 0.09495
}

Semantic roles & 50–950 ramp

primary

#1F53AD

secondary

#C8A260

accent

#AC3BEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1F53AD

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

Preview Lab → · Contrast checker → · Palette generator →