#1D428C#1D428C

#1D428C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.8% C 0.131 H 262.2°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#1D428C
RGB	rgb(29, 66, 140)
HSL	hsl(220, 66%, 33%)
HSV	hsv(220, 79%, 55%)
CMYK	cmyk(79.3%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(29.54, 15.14, -44.92)
CIE-LCH	lch(29.54, 47.40, 288.63°)
OKLab	oklab(39.78% -0.0176 -0.1293)
OKLCH	oklch(39.78% 0.131 262.2)
XYZ	xyz(7.1868, 6.0503, 25.5949)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D428C #8C671D

analogous

#1D798C #1D428C #2F1D8C

triadic

#1D428C #8C1D42 #428C1D

tetradic

#1D428C #8C1D79 #8C671D #1D8C2F

square

#1D428C #8C1D79 #8C671D #1D8C2F

split-complementary

#1D428C #8C2F1D #798C1D

monochromatic

#081227 #122A59 #1D428C #285ABF #4A7AD9

Accessibility & contrast

On white

9.50

#1D428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1D428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D428C

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D428C	#FFFFFF	#000000	##FFFFFF
##1D428C	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114B8F

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d428c;
/* rgb */ color: rgb(29, 66, 140);
/* oklch */ color: oklch(39.8% 0.131 262.2);

Tailwind

colors: {
  custom: {
    50: '#6b75ae',
    500: '#1d428c',
    950: '#000000',
  },
}

SCSS

$custom: #1d428c;
$custom-light: #6b75ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d428c",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 220,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.39775,
    "c": 0.13051,
    "h": 262.2
  },
  "luminance": 0.06051
}

Semantic roles & 50–950 ramp

primary

#1D428C

secondary

#BC9549

accent

#B03FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1D428C

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

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