#1F4CA9#1F4CA9

#1F4CA9 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.4% C 0.158 H 262.5°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#1F4CA9
RGB	rgb(31, 76, 169)
HSL	hsl(220, 69%, 39%)
HSV	hsv(220, 82%, 66%)
CMYK	cmyk(81.7%, 55%, 0%, 33.7%)
CIE-LAB	lab(34.65, 20.14, -54.21)
CIE-LCH	lch(34.65, 57.83, 290.38°)
OKLab	oklab(44.37% -0.0207 -0.1564)
OKLCH	oklch(44.37% 0.158 262.5)
XYZ	xyz(10.3084, 8.3235, 38.5917)
Luminance	0.0833 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4CA9 #A97C1F

analogous

#1F91A9 #1F4CA9 #371FA9

triadic

#1F4CA9 #A91F4C #4CA91F

tetradic

#1F4CA9 #A91F91 #A97C1F #1FA937

square

#1F4CA9 #A91F91 #A97C1F #1FA937

split-complementary

#1F4CA9 #A9371F #91A91F

monochromatic

#0C1D42 #163575 #1F4CA9 #2D65D8 #608BE2

Accessibility & contrast

On white

7.88

#1F4CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#1F4CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4CA9

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4CA9	#FFFFFF	#000000	##FFFFFF
##1F4CA9	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AC

Deuteranopia (green-blind)

#004BA7

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ca9;
/* rgb */ color: rgb(31, 76, 169);
/* oklch */ color: oklch(44.4% 0.158 262.5);

Tailwind

colors: {
  custom: {
    50: '#727dc3',
    500: '#1f4ca9',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ca9;
$custom-light: #727dc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ca9",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 169
  },
  "hsl": {
    "h": 220.435,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.44365,
    "c": 0.1578,
    "h": 262.5
  },
  "luminance": 0.08325
}

Semantic roles & 50–950 ramp

primary

#1F4CA9

secondary

#C7A45D

accent

#B23CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1F4CA9

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

Preview Lab → · Contrast checker → · Palette generator →