#1F4DA9#1F4DA9

#1F4DA9 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.6% C 0.157 H 262.2°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F4DA9
RGB	rgb(31, 77, 169)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 82%, 66%)
CMYK	cmyk(81.7%, 54.4%, 0%, 33.7%)
CIE-LAB	lab(34.93, 19.46, -53.76)
CIE-LCH	lch(34.93, 57.17, 289.90°)
OKLab	oklab(44.58% -0.0214 -0.1551)
OKLCH	oklch(44.58% 0.157 262.2)
XYZ	xyz(10.3778, 8.4624, 38.6149)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4DA9 #A97B1F

analogous

#1F92A9 #1F4DA9 #361FA9

triadic

#1F4DA9 #A91F4D #4DA91F

tetradic

#1F4DA9 #A91F92 #A97B1F #1FA936

square

#1F4DA9 #A91F92 #A97B1F #1FA936

split-complementary

#1F4DA9 #A9361F #92A91F

monochromatic

#0C1E42 #163575 #1F4DA9 #2D66D8 #608CE2

Accessibility & contrast

On white

7.80

#1F4DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1F4DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4DA9

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4DA9	#FFFFFF	#000000	##FFFFFF
##1F4DA9	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059AC

Deuteranopia (green-blind)

#004CA7

Tritanopia (blue-blind)

#006473

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f4da9;
/* rgb */ color: rgb(31, 77, 169);
/* oklch */ color: oklch(44.6% 0.157 262.2);

Tailwind

colors: {
  custom: {
    50: '#727ec3',
    500: '#1f4da9',
    950: '#000000',
  },
}

SCSS

$custom: #1f4da9;
$custom-light: #727ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4da9",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 169
  },
  "hsl": {
    "h": 220,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.44578,
    "c": 0.15654,
    "h": 262.2
  },
  "luminance": 0.08464
}

Semantic roles & 50–950 ramp

primary

#1F4DA9

secondary

#C7A35D

accent

#B13CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1F4DA9

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

Preview Lab → · Contrast checker → · Palette generator →