#1C287A#1C287A

#1C287A is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.139 H 270.1°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#1C287A
RGB	rgb(28, 40, 122)
HSL	hsl(232, 63%, 29%)
HSV	hsv(232, 77%, 48%)
CMYK	cmyk(77%, 67.2%, 0%, 52.2%)
CIE-LAB	lab(20.71, 25.93, -48.02)
CIE-LCH	lch(20.71, 54.57, 298.37°)
OKLab	oklab(32.68% 0.0003 -0.1388)
OKLCH	oklch(32.68% 0.139 270.1)
XYZ	xyz(4.7493, 3.1691, 18.7700)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C287A #7A6E1C

analogous

#1C577A #1C287A #3F1C7A

triadic

#1C287A #7A1C28 #287A1C

tetradic

#1C287A #7A1C57 #7A6E1C #1C7A3F

square

#1C287A #7A1C57 #7A6E1C #1C7A3F

split-complementary

#1C287A #7A3F1C #577A1C

monochromatic

#060819 #111848 #1C287A #2738AC #3E51D3

Accessibility & contrast

On white

12.85

#1C287A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1C287A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C287A

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C287A	#FFFFFF	#000000	##FFFFFF
##1C287A	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367D

Deuteranopia (green-blind)

#002D78

Tritanopia (blue-blind)

#003E4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c287a;
/* rgb */ color: rgb(28, 40, 122);
/* oklch */ color: oklch(32.7% 0.139 270.1);

Tailwind

colors: {
  custom: {
    50: '#6862a1',
    500: '#1c287a',
    950: '#000000',
  },
}

SCSS

$custom: #1c287a;
$custom-light: #6862a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c287a",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 122
  },
  "hsl": {
    "h": 232.34,
    "s": 62.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32679,
    "c": 0.13884,
    "h": 270.1
  },
  "luminance": 0.0317
}

Semantic roles & 50–950 ramp

primary

#1C287A

secondary

#AEA044

accent

#D142E6

background

#F6F5FA

surface

#ECEAF3

border

#C7C6CD

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C287A

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

Preview Lab → · Contrast checker → · Palette generator →