#1F44A5#1F44A5

#1F44A5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.4% C 0.162 H 264.5°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#1F44A5
RGB	rgb(31, 68, 165)
HSL	hsl(223, 68%, 38%)
HSV	hsv(223, 81%, 65%)
CMYK	cmyk(81.2%, 58.8%, 0%, 35.3%)
CIE-LAB	lab(32.13, 23.96, -55.92)
CIE-LCH	lch(32.13, 60.84, 293.19°)
OKLab	oklab(42.37% -0.0156 -0.1616)
OKLCH	oklch(42.37% 0.162 264.5)
XYZ	xyz(9.4213, 7.1410, 36.4718)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F44A5 #A5801F

analogous

#1F87A5 #1F44A5 #3D1FA5

triadic

#1F44A5 #A51F44 #44A51F

tetradic

#1F44A5 #A51F87 #A5801F #1FA53D

square

#1F44A5 #A51F87 #A5801F #1FA53D

split-complementary

#1F44A5 #A53D1F #87A51F

monochromatic

#0C1A3E #152F71 #1F44A5 #2A5AD7 #5E82E1

Accessibility & contrast

On white

8.65

#1F44A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1F44A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F44A5

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F44A5	#FFFFFF	#000000	##FFFFFF
##1F44A5	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A8

Deuteranopia (green-blind)

#0046A3

Tritanopia (blue-blind)

#005D6D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f44a5;
/* rgb */ color: rgb(31, 68, 165);
/* oklch */ color: oklch(42.4% 0.162 264.5);

Tailwind

colors: {
  custom: {
    50: '#7277c0',
    500: '#1f44a5',
    950: '#000000',
  },
}

SCSS

$custom: #1f44a5;
$custom-light: #7277c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f44a5",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 165
  },
  "hsl": {
    "h": 223.433,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.42365,
    "c": 0.16235,
    "h": 264.5
  },
  "luminance": 0.07142
}

Semantic roles & 50–950 ramp

primary

#1F44A5

secondary

#C5A85B

accent

#BB3DEB

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F44A5

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

Preview Lab → · Contrast checker → · Palette generator →