#1F429A#1F429A

#1F429A is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.150 H 264.3°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F429A
RGB	rgb(31, 66, 154)
HSL	hsl(223, 66%, 36%)
HSV	hsv(223, 80%, 60%)
CMYK	cmyk(79.9%, 57.1%, 0%, 39.6%)
CIE-LAB	lab(30.69, 20.98, -51.62)
CIE-LCH	lch(30.69, 55.72, 292.12°)
OKLab	oklab(41.01% -0.0148 -0.149)
OKLCH	oklch(41.01% 0.15 264.3)
XYZ	xyz(8.3440, 6.5199, 31.3843)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F429A #9A771F

analogous

#1F809A #1F429A #3A1F9A

triadic

#1F429A #9A1F42 #429A1F

tetradic

#1F429A #9A1F80 #9A771F #1F9A3A

square

#1F429A #9A1F80 #9A771F #1F9A3A

split-complementary

#1F429A #9A3A1F #809A1F

monochromatic

#0A1634 #152C67 #1F429A #2958CD #567DDD

Accessibility & contrast

On white

9.11

#1F429A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1F429A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F429A

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F429A	#FFFFFF	#000000	##FFFFFF
##1F429A	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9D

Deuteranopia (green-blind)

#004398

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f429a;
/* rgb */ color: rgb(31, 66, 154);
/* oklch */ color: oklch(41.0% 0.150 264.3);

Tailwind

colors: {
  custom: {
    50: '#6f75b8',
    500: '#1f429a',
    950: '#000000',
  },
}

SCSS

$custom: #1f429a;
$custom-light: #6f75b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f429a",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 154
  },
  "hsl": {
    "h": 222.927,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41006,
    "c": 0.14973,
    "h": 264.3
  },
  "luminance": 0.06521
}

Semantic roles & 50–950 ramp

primary

#1F429A

secondary

#C1A254

accent

#B93EE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F429A

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

Preview Lab → · Contrast checker → · Palette generator →