#1C428F#1C428F

#1C428F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.0% C 0.135 H 262.3°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C428F
RGB	rgb(28, 66, 143)
HSL	hsl(220, 67%, 34%)
HSV	hsv(220, 80%, 56%)
CMYK	cmyk(80.4%, 53.8%, 0%, 43.9%)
CIE-LAB	lab(29.73, 16.24, -46.46)
CIE-LCH	lch(29.73, 49.22, 289.27°)
OKLab	oklab(39.98% -0.018 -0.1339)
OKLCH	oklch(39.98% 0.135 262.3)
XYZ	xyz(7.3832, 6.1256, 26.7745)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C428F #8F691C

analogous

#1C7B8F #1C428F #2F1C8F

triadic

#1C428F #8F1C42 #428F1C

tetradic

#1C428F #8F1C7B #8F691C #1C8F2F

square

#1C428F #8F1C7B #8F691C #1C8F2F

split-complementary

#1C428F #8F2F1C #7B8F1C

monochromatic

#081329 #122A5C #1C428F #265AC2 #4A7ADC

Accessibility & contrast

On white

9.44

#1C428F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1C428F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C428F

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C428F	#FFFFFF	#000000	##FFFFFF
##1C428F	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094C92

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c428f;
/* rgb */ color: rgb(28, 66, 143);
/* oklch */ color: oklch(40.0% 0.135 262.3);

Tailwind

colors: {
  custom: {
    50: '#6c75b0',
    500: '#1c428f',
    950: '#000000',
  },
}

SCSS

$custom: #1c428f;
$custom-light: #6c75b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c428f",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 143
  },
  "hsl": {
    "h": 220.174,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3998,
    "c": 0.13508,
    "h": 262.3
  },
  "luminance": 0.06126
}

Semantic roles & 50–950 ramp

primary

#1C428F

secondary

#BE9749

accent

#B13EEA

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1C428F

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

Preview Lab → · Contrast checker → · Palette generator →