#1F50B4#1F50B4

#1F50B4 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.1% C 0.168 H 262.3°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F50B4
RGB	rgb(31, 80, 180)
HSL	hsl(220, 71%, 41%)
HSV	hsv(220, 83%, 71%)
CMYK	cmyk(82.8%, 55.6%, 0%, 29.4%)
CIE-LAB	lab(36.60, 21.79, -57.57)
CIE-LCH	lch(36.60, 61.56, 290.73°)
OKLab	oklab(46.11% -0.0224 -0.1662)
OKLCH	oklch(46.11% 0.168 262.3)
XYZ	xyz(11.6690, 9.3225, 44.3556)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F50B4 #B4831F

analogous

#1F9BB4 #1F50B4 #381FB4

triadic

#1F50B4 #B41F50 #50B41F

tetradic

#1F50B4 #B41F9B #B4831F #1FB438

square

#1F50B4 #B41F9B #B4831F #1FB438

split-complementary

#1F50B4 #B4381F #9BB41F

monochromatic

#0D224C #163980 #1F50B4 #346BDC #6891E5

Accessibility & contrast

On white

7.33

#1F50B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1F50B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F50B4

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F50B4	#FFFFFF	#000000	##FFFFFF
##1F50B4	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB7

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#00697A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f50b4;
/* rgb */ color: rgb(31, 80, 180);
/* oklch */ color: oklch(46.1% 0.168 262.3);

Tailwind

colors: {
  custom: {
    50: '#7580cb',
    500: '#1f50b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f50b4;
$custom-light: #7580cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f50b4",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 180
  },
  "hsl": {
    "h": 220.268,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.46106,
    "c": 0.16774,
    "h": 262.3
  },
  "luminance": 0.09324
}

Semantic roles & 50–950 ramp

primary

#1F50B4

secondary

#CBA964

accent

#B33AED

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1F50B4

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

Preview Lab → · Contrast checker → · Palette generator →