#1F52B4#1F52B4

#1F52B4 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.5% C 0.165 H 261.7°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F52B4
RGB	rgb(31, 82, 180)
HSL	hsl(219, 71%, 41%)
HSV	hsv(219, 83%, 71%)
CMYK	cmyk(82.8%, 54.4%, 0%, 29.4%)
CIE-LAB	lab(37.15, 20.46, -56.68)
CIE-LCH	lch(37.15, 60.25, 289.85°)
OKLab	oklab(46.53% -0.0237 -0.1636)
OKLCH	oklch(46.53% 0.165 261.7)
XYZ	xyz(11.8176, 9.6197, 44.4051)
Luminance	0.0962 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52B4 #B4811F

analogous

#1F9DB4 #1F52B4 #371FB4

triadic

#1F52B4 #B41F52 #52B41F

tetradic

#1F52B4 #B41F9D #B4811F #1FB437

square

#1F52B4 #B41F9D #B4811F #1FB437

split-complementary

#1F52B4 #B4371F #9DB41F

monochromatic

#0D224C #163A80 #1F52B4 #346EDC #6893E5

Accessibility & contrast

On white

7.18

#1F52B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1F52B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52B4

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52B4	#FFFFFF	#000000	##FFFFFF
##1F52B4	1.00	7.18	2.92	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FB7

Deuteranopia (green-blind)

#0051B2

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1f52b4;
/* rgb */ color: rgb(31, 82, 180);
/* oklch */ color: oklch(46.5% 0.165 261.7);

Tailwind

colors: {
  custom: {
    50: '#7581cb',
    500: '#1f52b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f52b4;
$custom-light: #7581cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52b4",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 180
  },
  "hsl": {
    "h": 219.463,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.46526,
    "c": 0.16527,
    "h": 261.7
  },
  "luminance": 0.09621
}

Semantic roles & 50–950 ramp

primary

#1F52B4

secondary

#CBA864

accent

#B03AED

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1F52B4

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

Preview Lab → · Contrast checker → · Palette generator →