#1F4EA9#1F4EA9

#1F4EA9 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.8% C 0.155 H 261.8°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F4EA9
RGB	rgb(31, 78, 169)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 82%, 66%)
CMYK	cmyk(81.7%, 53.8%, 0%, 33.7%)
CIE-LAB	lab(35.21, 18.79, -53.30)
CIE-LCH	lch(35.21, 56.52, 289.42°)
OKLab	oklab(44.79% -0.0221 -0.1537)
OKLCH	oklch(44.79% 0.155 261.8)
XYZ	xyz(10.4483, 8.6034, 38.6384)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4EA9 #A97A1F

analogous

#1F93A9 #1F4EA9 #351FA9

triadic

#1F4EA9 #A91F4E #4EA91F

tetradic

#1F4EA9 #A91F93 #A97A1F #1FA935

square

#1F4EA9 #A91F93 #A97A1F #1FA935

split-complementary

#1F4EA9 #A9351F #93A91F

monochromatic

#0C1E42 #163675 #1F4EA9 #2D67D8 #608DE2

Accessibility & contrast

On white

7.72

#1F4EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1F4EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4EA9

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4EA9	#FFFFFF	#000000	##FFFFFF
##1F4EA9	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0359AC

Deuteranopia (green-blind)

#004DA7

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f4ea9;
/* rgb */ color: rgb(31, 78, 169);
/* oklch */ color: oklch(44.8% 0.155 261.8);

Tailwind

colors: {
  custom: {
    50: '#727ec3',
    500: '#1f4ea9',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ea9;
$custom-light: #727ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ea9",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 169
  },
  "hsl": {
    "h": 219.565,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.44791,
    "c": 0.1553,
    "h": 261.8
  },
  "luminance": 0.08605
}

Semantic roles & 50–950 ramp

primary

#1F4EA9

secondary

#C7A35D

accent

#B03CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1F4EA9

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

Preview Lab → · Contrast checker → · Palette generator →