#1D428D#1D428D

#1D428D is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.132 H 262.4°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#1D428D
RGB	rgb(29, 66, 141)
HSL	hsl(220, 66%, 33%)
HSV	hsv(220, 79%, 55%)
CMYK	cmyk(79.4%, 53.2%, 0%, 44.7%)
CIE-LAB	lab(29.61, 15.55, -45.41)
CIE-LCH	lch(29.61, 48.00, 288.90°)
OKLab	oklab(39.86% -0.0175 -0.1308)
OKLCH	oklch(39.86% 0.132 262.4)
XYZ	xyz(7.2609, 6.0799, 25.9850)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D428D #8D681D

analogous

#1D7A8D #1D428D #301D8D

triadic

#1D428D #8D1D42 #428D1D

tetradic

#1D428D #8D1D7A #8D681D #1D8D30

square

#1D428D #8D1D7A #8D681D #1D8D30

split-complementary

#1D428D #8D301D #7A8D1D

monochromatic

#081227 #132A5A #1D428D #275AC0 #4B7ADA

Accessibility & contrast

On white

9.48

#1D428D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1D428D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D428D

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D428D	#FFFFFF	#000000	##FFFFFF
##1D428D	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4B90

Deuteranopia (green-blind)

#00418C

Tritanopia (blue-blind)

#005461

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d428d;
/* rgb */ color: rgb(29, 66, 141);
/* oklch */ color: oklch(39.9% 0.132 262.4);

Tailwind

colors: {
  custom: {
    50: '#6b75af',
    500: '#1d428d',
    950: '#000000',
  },
}

SCSS

$custom: #1d428d;
$custom-light: #6b75af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d428d",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 141
  },
  "hsl": {
    "h": 220.179,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.39855,
    "c": 0.13194,
    "h": 262.4
  },
  "luminance": 0.06081
}

Semantic roles & 50–950 ramp

primary

#1D428D

secondary

#BC964A

accent

#B13FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1D428D

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

Preview Lab → · Contrast checker → · Palette generator →