#1F4AB2#1F4AB2

#1F4AB2 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.7% C 0.172 H 263.8°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AB2
RGB	rgb(31, 74, 178)
HSL	hsl(222, 70%, 41%)
HSV	hsv(222, 83%, 70%)
CMYK	cmyk(82.6%, 58.4%, 0%, 30.2%)
CIE-LAB	lab(34.81, 25.02, -59.31)
CIE-LCH	lch(34.81, 64.37, 292.87°)
OKLab	oklab(44.71% -0.0187 -0.1714)
OKLCH	oklch(44.71% 0.172 263.8)
XYZ	xyz(11.0469, 8.4019, 43.1503)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AB2 #B2871F

analogous

#1F93B2 #1F4AB2 #3D1FB2

triadic

#1F4AB2 #B21F4A #4AB21F

tetradic

#1F4AB2 #B21F93 #B2871F #1FB23D

square

#1F4AB2 #B21F93 #B2871F #1FB23D

split-complementary

#1F4AB2 #B23D1F #93B21F

monochromatic

#0D1F4A #16347E #1F4AB2 #3364DB #678CE5

Accessibility & contrast

On white

7.83

#1F4AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1F4AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AB2

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AB2	#FFFFFF	#000000	##FFFFFF
##1F4AB2	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B6

Deuteranopia (green-blind)

#004BB0

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4ab2;
/* rgb */ color: rgb(31, 74, 178);
/* oklch */ color: oklch(44.7% 0.172 263.8);

Tailwind

colors: {
  custom: {
    50: '#757bca',
    500: '#1f4ab2',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ab2;
$custom-light: #757bca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ab2",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 178
  },
  "hsl": {
    "h": 222.449,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44707,
    "c": 0.17246,
    "h": 263.8
  },
  "luminance": 0.08403
}

Semantic roles & 50–950 ramp

primary

#1F4AB2

secondary

#CAAC63

accent

#B93BED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1F4AB2

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

Preview Lab → · Contrast checker → · Palette generator →