#1F4AA0#1F4AA0

#1F4AA0 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.2% C 0.148 H 262.2°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F4AA0
RGB	rgb(31, 74, 160)
HSL	hsl(220, 68%, 37%)
HSV	hsv(220, 81%, 63%)
CMYK	cmyk(80.6%, 53.7%, 0%, 37.3%)
CIE-LAB	lab(33.41, 17.92, -50.84)
CIE-LCH	lch(33.41, 53.90, 289.41°)
OKLab	oklab(43.21% -0.0201 -0.1465)
OKLCH	oklch(43.21% 0.148 262.2)
XYZ	xyz(9.3567, 7.7258, 34.2490)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4AA0 #A0751F

analogous

#1F8AA0 #1F4AA0 #351FA0

triadic

#1F4AA0 #A01F4A #4AA01F

tetradic

#1F4AA0 #A01F8A #A0751F #1FA035

square

#1F4AA0 #A01F8A #A0751F #1FA035

split-complementary

#1F4AA0 #A0351F #8AA01F

monochromatic

#0B1B39 #15326D #1F4AA0 #2962D3 #5A87DF

Accessibility & contrast

On white

8.25

#1F4AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1F4AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4AA0

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4AA0	#FFFFFF	#000000	##FFFFFF
##1F4AA0	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0755A3

Deuteranopia (green-blind)

#00499E

Tritanopia (blue-blind)

#005F6D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4aa0;
/* rgb */ color: rgb(31, 74, 160);
/* oklch */ color: oklch(43.2% 0.148 262.2);

Tailwind

colors: {
  custom: {
    50: '#707bbd',
    500: '#1f4aa0',
    950: '#000000',
  },
}

SCSS

$custom: #1f4aa0;
$custom-light: #707bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4aa0",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 160
  },
  "hsl": {
    "h": 220,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43208,
    "c": 0.14791,
    "h": 262.2
  },
  "luminance": 0.07727
}

Semantic roles & 50–950 ramp

primary

#1F4AA0

secondary

#C39F58

accent

#B13DEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4AA0

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

Preview Lab → · Contrast checker → · Palette generator →