#1F429D#1F429D

#1F429D is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.154 H 264.5°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F429D
RGB	rgb(31, 66, 157)
HSL	hsl(223, 67%, 37%)
HSV	hsv(223, 80%, 62%)
CMYK	cmyk(80.3%, 58%, 0%, 38.4%)
CIE-LAB	lab(30.93, 22.17, -53.05)
CIE-LCH	lch(30.93, 57.49, 292.68°)
OKLab	oklab(41.26% -0.0146 -0.1532)
OKLCH	oklch(41.26% 0.154 264.5)
XYZ	xyz(8.5969, 6.6211, 32.7166)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F429D #9D7A1F

analogous

#1F819D #1F429D #3B1F9D

triadic

#1F429D #9D1F42 #429D1F

tetradic

#1F429D #9D1F81 #9D7A1F #1F9D3B

square

#1F429D #9D1F81 #9D7A1F #1F9D3B

split-complementary

#1F429D #9D3B1F #819D1F

monochromatic

#0B1737 #152D6A #1F429D #2957D0 #587DDE

Accessibility & contrast

On white

9.03

#1F429D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1F429D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F429D

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F429D	#FFFFFF	#000000	##FFFFFF
##1F429D	1.00	9.03	2.32	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA0

Deuteranopia (green-blind)

#00439B

Tritanopia (blue-blind)

#005969

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f429d;
/* rgb */ color: rgb(31, 66, 157);
/* oklch */ color: oklch(41.3% 0.154 264.5);

Tailwind

colors: {
  custom: {
    50: '#7075bb',
    500: '#1f429d',
    950: '#000000',
  },
}

SCSS

$custom: #1f429d;
$custom-light: #7075bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f429d",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 157
  },
  "hsl": {
    "h": 223.333,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.41262,
    "c": 0.15389,
    "h": 264.5
  },
  "luminance": 0.06622
}

Semantic roles & 50–950 ramp

primary

#1F429D

secondary

#C2A456

accent

#BA3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F429D

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

Preview Lab → · Contrast checker → · Palette generator →