#1F429C#1F429C

#1F429C is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.2% C 0.152 H 264.5°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#1F429C
RGB	rgb(31, 66, 156)
HSL	hsl(223, 67%, 37%)
HSV	hsv(223, 80%, 61%)
CMYK	cmyk(80.1%, 57.7%, 0%, 38.8%)
CIE-LAB	lab(30.85, 21.77, -52.57)
CIE-LCH	lch(30.85, 56.90, 292.50°)
OKLab	oklab(41.18% -0.0147 -0.1518)
OKLCH	oklch(41.18% 0.153 264.5)
XYZ	xyz(8.5119, 6.5870, 32.2689)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F429C #9C791F

analogous

#1F819C #1F429C #3B1F9C

triadic

#1F429C #9C1F42 #429C1F

tetradic

#1F429C #9C1F81 #9C791F #1F9C3B

square

#1F429C #9C1F81 #9C791F #1F9C3B

split-complementary

#1F429C #9C3B1F #819C1F

monochromatic

#0B1736 #152C69 #1F429C #2958CF #587DDE

Accessibility & contrast

On white

9.06

#1F429C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1F429C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F429C

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F429C	#FFFFFF	#000000	##FFFFFF
##1F429C	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9F

Deuteranopia (green-blind)

#00439A

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f429c;
/* rgb */ color: rgb(31, 66, 156);
/* oklch */ color: oklch(41.2% 0.152 264.5);

Tailwind

colors: {
  custom: {
    50: '#7075ba',
    500: '#1f429c',
    950: '#000000',
  },
}

SCSS

$custom: #1f429c;
$custom-light: #7075ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f429c",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 156
  },
  "hsl": {
    "h": 223.2,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.41177,
    "c": 0.1525,
    "h": 264.5
  },
  "luminance": 0.06588
}

Semantic roles & 50–950 ramp

primary

#1F429C

secondary

#C1A355

accent

#BA3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F429C

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

Preview Lab → · Contrast checker → · Palette generator →