#1F4BA8#1F4BA8

#1F4BA8 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.1% C 0.158 H 262.7°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F4BA8
RGB	rgb(31, 75, 168)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 82%, 66%)
CMYK	cmyk(81.5%, 55.4%, 0%, 34.1%)
CIE-LAB	lab(34.29, 20.41, -54.20)
CIE-LCH	lch(34.29, 57.91, 290.64°)
OKLab	oklab(44.07% -0.0201 -0.1564)
OKLCH	oklch(44.07% 0.158 262.7)
XYZ	xyz(10.1465, 8.1494, 38.0764)
Luminance	0.0815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4BA8 #A87C1F

analogous

#1F90A8 #1F4BA8 #381FA8

triadic

#1F4BA8 #A81F4B #4BA81F

tetradic

#1F4BA8 #A81F90 #A87C1F #1FA838

square

#1F4BA8 #A81F90 #A87C1F #1FA838

split-complementary

#1F4BA8 #A8381F #90A81F

monochromatic

#0C1D41 #153474 #1F4BA8 #2C63D8 #6089E2

Accessibility & contrast

On white

7.98

#1F4BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1F4BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4BA8

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4BA8	#FFFFFF	#000000	##FFFFFF
##1F4BA8	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AB

Deuteranopia (green-blind)

#004BA6

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ba8;
/* rgb */ color: rgb(31, 75, 168);
/* oklch */ color: oklch(44.1% 0.158 262.7);

Tailwind

colors: {
  custom: {
    50: '#727cc3',
    500: '#1f4ba8',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ba8;
$custom-light: #727cc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ba8",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 168
  },
  "hsl": {
    "h": 220.73,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.44072,
    "c": 0.15768,
    "h": 262.7
  },
  "luminance": 0.08151
}

Semantic roles & 50–950 ramp

primary

#1F4BA8

secondary

#C6A45D

accent

#B33CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4BA8

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

Preview Lab → · Contrast checker → · Palette generator →