#1C4289#1C4289

#1C4289 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.127 H 261.5°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#1C4289
RGB	rgb(28, 66, 137)
HSL	hsl(219, 66%, 32%)
HSV	hsv(219, 80%, 54%)
CMYK	cmyk(79.6%, 51.8%, 0%, 46.3%)
CIE-LAB	lab(29.28, 13.81, -43.48)
CIE-LCH	lch(29.28, 45.62, 287.62°)
OKLab	oklab(39.5% -0.0187 -0.1251)
OKLCH	oklch(39.5% 0.127 261.5)
XYZ	xyz(6.9408, 5.9486, 24.4445)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4289 #89631C

analogous

#1C7889 #1C4289 #2D1C89

triadic

#1C4289 #891C42 #42891C

tetradic

#1C4289 #891C78 #89631C #1C892D

square

#1C4289 #891C78 #89631C #1C892D

split-complementary

#1C4289 #892D1C #78891C

monochromatic

#071123 #122A56 #1C4289 #265ABC #4679D9

Accessibility & contrast

On white

9.59

#1C4289 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1C4289 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4289

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4289	#FFFFFF	#000000	##FFFFFF
##1C4289	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164A8C

Deuteranopia (green-blind)

#004088

Tritanopia (blue-blind)

#00535F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c4289;
/* rgb */ color: rgb(28, 66, 137);
/* oklch */ color: oklch(39.5% 0.127 261.5);

Tailwind

colors: {
  custom: {
    50: '#6a75ac',
    500: '#1c4289',
    950: '#000000',
  },
}

SCSS

$custom: #1c4289;
$custom-light: #6a75ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4289",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 137
  },
  "hsl": {
    "h": 219.083,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39499,
    "c": 0.1265,
    "h": 261.5
  },
  "luminance": 0.05949
}

Semantic roles & 50–950 ramp

primary

#1C4289

secondary

#BB9246

accent

#AE3FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C4289

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

Preview Lab → · Contrast checker → · Palette generator →