#1F44AD#1F44AD

#1F44AD is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.173 H 264.9°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F44AD
RGB	rgb(31, 68, 173)
HSL	hsl(224, 70%, 40%)
HSV	hsv(224, 82%, 68%)
CMYK	cmyk(82.1%, 60.7%, 0%, 32.2%)
CIE-LAB	lab(32.79, 27.08, -59.62)
CIE-LCH	lch(32.79, 65.49, 294.43°)
OKLab	oklab(43.07% -0.0153 -0.1725)
OKLCH	oklch(43.07% 0.173 264.9)
XYZ	xyz(10.1723, 7.4415, 40.4273)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F44AD #AD881F

analogous

#1F8BAD #1F44AD #411FAD

triadic

#1F44AD #AD1F44 #44AD1F

tetradic

#1F44AD #AD1F8B #AD881F #1FAD41

square

#1F44AD #AD1F8B #AD881F #1FAD41

split-complementary

#1F44AD #AD411F #8BAD1F

monochromatic

#0C1B45 #163079 #1F44AD #2F5CDA #6385E3

Accessibility & contrast

On white

8.44

#1F44AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F44AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F44AD

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F44AD	#FFFFFF	#000000	##FFFFFF
##1F44AD	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B0

Deuteranopia (green-blind)

#0047AB

Tritanopia (blue-blind)

#005F72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f44ad;
/* rgb */ color: rgb(31, 68, 173);
/* oklch */ color: oklch(43.1% 0.173 264.9);

Tailwind

colors: {
  custom: {
    50: '#7477c6',
    500: '#1f44ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f44ad;
$custom-light: #7477c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f44ad",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 173
  },
  "hsl": {
    "h": 224.366,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.4307,
    "c": 0.17314,
    "h": 264.9
  },
  "luminance": 0.07443
}

Semantic roles & 50–950 ramp

primary

#1F44AD

secondary

#C8AD60

accent

#BE3BEC

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1F44AD

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

Preview Lab → · Contrast checker → · Palette generator →