#1F4DA7#1F4DA7

#1F4DA7 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.154 H 261.9°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F4DA7
RGB	rgb(31, 77, 167)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 81%, 65%)
CMYK	cmyk(81.4%, 53.9%, 0%, 34.5%)
CIE-LAB	lab(34.78, 18.67, -52.81)
CIE-LCH	lch(34.78, 56.01, 289.47°)
OKLab	oklab(44.42% -0.0216 -0.1523)
OKLCH	oklch(44.42% 0.154 261.9)
XYZ	xyz(10.1915, 8.3879, 37.6336)
Luminance	0.0839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4DA7 #A7791F

analogous

#1F91A7 #1F4DA7 #351FA7

triadic

#1F4DA7 #A71F4D #4DA71F

tetradic

#1F4DA7 #A71F91 #A7791F #1FA735

square

#1F4DA7 #A71F91 #A7791F #1FA735

split-complementary

#1F4DA7 #A7351F #91A71F

monochromatic

#0C1D40 #153573 #1F4DA7 #2B66D8 #5F8BE1

Accessibility & contrast

On white

7.84

#1F4DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1F4DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4DA7

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4DA7	#FFFFFF	#000000	##FFFFFF
##1F4DA7	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0358AA

Deuteranopia (green-blind)

#004CA5

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4da7;
/* rgb */ color: rgb(31, 77, 167);
/* oklch */ color: oklch(44.4% 0.154 261.9);

Tailwind

colors: {
  custom: {
    50: '#727ec2',
    500: '#1f4da7',
    950: '#000000',
  },
}

SCSS

$custom: #1f4da7;
$custom-light: #727ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4da7",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 167
  },
  "hsl": {
    "h": 219.706,
    "s": 68.687,
    "l": 38.824
  },
  "oklch": {
    "l": 0.44417,
    "c": 0.1538,
    "h": 261.9
  },
  "luminance": 0.08389
}

Semantic roles & 50–950 ramp

primary

#1F4DA7

secondary

#C6A25C

accent

#B03CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1F4DA7

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

Preview Lab → · Contrast checker → · Palette generator →