#1F429E#1F429E

#1F429E is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.3% C 0.155 H 264.6°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F429E
RGB	rgb(31, 66, 158)
HSL	hsl(223, 67%, 37%)
HSV	hsv(223, 80%, 62%)
CMYK	cmyk(80.4%, 58.2%, 0%, 38%)
CIE-LAB	lab(31.01, 22.56, -53.52)
CIE-LCH	lch(31.01, 58.08, 292.86°)
OKLab	oklab(41.35% -0.0146 -0.1546)
OKLCH	oklch(41.35% 0.155 264.6)
XYZ	xyz(8.6827, 6.6553, 33.1681)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F429E #9E7B1F

analogous

#1F819E #1F429E #3C1F9E

triadic

#1F429E #9E1F42 #429E1F

tetradic

#1F429E #9E1F81 #9E7B1F #1F9E3C

square

#1F429E #9E1F81 #9E7B1F #1F9E3C

split-complementary

#1F429E #9E3C1F #819E1F

monochromatic

#0B1738 #152D6B #1F429E #2957D1 #597EDE

Accessibility & contrast

On white

9.01

#1F429E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F429E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F429E

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F429E	#FFFFFF	#000000	##FFFFFF
##1F429E	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA1

Deuteranopia (green-blind)

#00439C

Tritanopia (blue-blind)

#005969

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f429e;
/* rgb */ color: rgb(31, 66, 158);
/* oklch */ color: oklch(41.3% 0.155 264.6);

Tailwind

colors: {
  custom: {
    50: '#7075bb',
    500: '#1f429e',
    950: '#000000',
  },
}

SCSS

$custom: #1f429e;
$custom-light: #7075bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f429e",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 158
  },
  "hsl": {
    "h": 223.465,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.41348,
    "c": 0.15527,
    "h": 264.6
  },
  "luminance": 0.06656
}

Semantic roles & 50–950 ramp

primary

#1F429E

secondary

#C2A556

accent

#BB3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F429E

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

Preview Lab → · Contrast checker → · Palette generator →