#1D428E#1D428E

#1D428E is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.133 H 262.5°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1D428E
RGB	rgb(29, 66, 142)
HSL	hsl(220, 66%, 34%)
HSV	hsv(220, 80%, 56%)
CMYK	cmyk(79.6%, 53.5%, 0%, 44.3%)
CIE-LAB	lab(29.69, 15.95, -45.91)
CIE-LCH	lch(29.69, 48.60, 289.16°)
OKLab	oklab(39.94% -0.0174 -0.1322)
OKLCH	oklch(39.94% 0.133 262.5)
XYZ	xyz(7.3356, 6.1098, 26.3786)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D428E #8E691D

analogous

#1D7A8E #1D428E #301D8E

triadic

#1D428E #8E1D42 #428E1D

tetradic

#1D428E #8E1D7A #8E691D #1D8E30

square

#1D428E #8E1D7A #8E691D #1D8E30

split-complementary

#1D428E #8E301D #7A8E1D

monochromatic

#081328 #132A5B #1D428E #275AC1 #4B7ADA

Accessibility & contrast

On white

9.45

#1D428E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1D428E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D428E

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D428E	#FFFFFF	#000000	##FFFFFF
##1D428E	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4B91

Deuteranopia (green-blind)

#00418C

Tritanopia (blue-blind)

#005461

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d428e;
/* rgb */ color: rgb(29, 66, 142);
/* oklch */ color: oklch(39.9% 0.133 262.5);

Tailwind

colors: {
  custom: {
    50: '#6c75b0',
    500: '#1d428e',
    950: '#000000',
  },
}

SCSS

$custom: #1d428e;
$custom-light: #6c75b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d428e",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 142
  },
  "hsl": {
    "h": 220.354,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39936,
    "c": 0.13337,
    "h": 262.5
  },
  "luminance": 0.06111
}

Semantic roles & 50–950 ramp

primary

#1D428E

secondary

#BD974A

accent

#B13FE9

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1D428E

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

Preview Lab → · Contrast checker → · Palette generator →