#1F42AD#1F42AD

#1F42AD is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.176 H 265.4°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F42AD
RGB	rgb(31, 66, 173)
HSL	hsl(225, 70%, 40%)
HSV	hsv(225, 82%, 68%)
CMYK	cmyk(82.1%, 61.8%, 0%, 32.2%)
CIE-LAB	lab(32.27, 28.42, -60.48)
CIE-LCH	lch(32.27, 66.83, 295.17°)
OKLab	oklab(42.68% -0.0141 -0.175)
OKLCH	oklch(42.68% 0.176 265.4)
XYZ	xyz(10.0534, 7.2037, 40.3876)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F42AD #AD8A1F

analogous

#1F89AD #1F42AD #431FAD

triadic

#1F42AD #AD1F42 #42AD1F

tetradic

#1F42AD #AD1F89 #AD8A1F #1FAD43

square

#1F42AD #AD1F89 #AD8A1F #1FAD43

split-complementary

#1F42AD #AD431F #89AD1F

monochromatic

#0C1A45 #162E79 #1F42AD #2F59DA #6383E3

Accessibility & contrast

On white

8.60

#1F42AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1F42AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F42AD

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F42AD	#FFFFFF	#000000	##FFFFFF
##1F42AD	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f42ad;
/* rgb */ color: rgb(31, 66, 173);
/* oklch */ color: oklch(42.7% 0.176 265.4);

Tailwind

colors: {
  custom: {
    50: '#7476c6',
    500: '#1f42ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f42ad;
$custom-light: #7476c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f42ad",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 173
  },
  "hsl": {
    "h": 225.211,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.42679,
    "c": 0.17558,
    "h": 265.4
  },
  "luminance": 0.07205
}

Semantic roles & 50–950 ramp

primary

#1F42AD

secondary

#C8AE60

accent

#C13BEC

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1F42AD

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

Preview Lab → · Contrast checker → · Palette generator →