#1C428A#1C428A

#1C428A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.6% C 0.128 H 261.6°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#1C428A
RGB	rgb(28, 66, 138)
HSL	hsl(219, 66%, 33%)
HSV	hsv(219, 80%, 54%)
CMYK	cmyk(79.7%, 52.2%, 0%, 45.9%)
CIE-LAB	lab(29.36, 14.21, -43.98)
CIE-LCH	lch(29.36, 46.22, 287.91°)
OKLab	oklab(39.58% -0.0186 -0.1266)
OKLCH	oklch(39.58% 0.128 261.6)
XYZ	xyz(7.0129, 5.9775, 24.8240)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C428A #8A641C

analogous

#1C798A #1C428A #2D1C8A

triadic

#1C428A #8A1C42 #428A1C

tetradic

#1C428A #8A1C79 #8A641C #1C8A2D

square

#1C428A #8A1C79 #8A641C #1C8A2D

split-complementary

#1C428A #8A2D1C #798A1C

monochromatic

#071124 #122A57 #1C428A #265ABD #477ADA

Accessibility & contrast

On white

9.56

#1C428A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1C428A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C428A

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C428A	#FFFFFF	#000000	##FFFFFF
##1C428A	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144A8D

Deuteranopia (green-blind)

#004089

Tritanopia (blue-blind)

#00535F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c428a;
/* rgb */ color: rgb(28, 66, 138);
/* oklch */ color: oklch(39.6% 0.128 261.6);

Tailwind

colors: {
  custom: {
    50: '#6a75ad',
    500: '#1c428a',
    950: '#000000',
  },
}

SCSS

$custom: #1c428a;
$custom-light: #6a75ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c428a",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 138
  },
  "hsl": {
    "h": 219.273,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.39578,
    "c": 0.12794,
    "h": 261.6
  },
  "luminance": 0.05978
}

Semantic roles & 50–950 ramp

primary

#1C428A

secondary

#BB9346

accent

#AE3FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C428A

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

Preview Lab → · Contrast checker → · Palette generator →