#1C3587#1C3587

#1C3587 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.141 H 266.4°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#1C3587
RGB	rgb(28, 53, 135)
HSL	hsl(226, 66%, 32%)
HSV	hsv(226, 79%, 53%)
CMYK	cmyk(79.3%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(25.39, 22.05, -48.56)
CIE-LCH	lch(25.39, 53.33, 294.42°)
OKLab	oklab(36.5% -0.0089 -0.1403)
OKLCH	oklch(36.5% 0.141 266.4)
XYZ	xyz(6.1236, 4.5417, 23.4709)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3587 #876E1C

analogous

#1C6B87 #1C3587 #381C87

triadic

#1C3587 #871C35 #35871C

tetradic

#1C3587 #871C6B #876E1C #1C8738

square

#1C3587 #871C6B #876E1C #1C8738

split-complementary

#1C3587 #87381C #6B871C

monochromatic

#070D22 #112154 #1C3587 #2749BA #4567D8

Accessibility & contrast

On white

11.00

#1C3587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1C3587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3587

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3587	#FFFFFF	#000000	##FFFFFF
##1C3587	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003785

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c3587;
/* rgb */ color: rgb(28, 53, 135);
/* oklch */ color: oklch(36.5% 0.141 266.4);

Tailwind

colors: {
  custom: {
    50: '#6a6bab',
    500: '#1c3587',
    950: '#000000',
  },
}

SCSS

$custom: #1c3587;
$custom-light: #6a6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3587",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 225.981,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.36505,
    "c": 0.14056,
    "h": 266.4
  },
  "luminance": 0.04542
}

Semantic roles & 50–950 ramp

primary

#1C3587

secondary

#BA9F45

accent

#C13FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1C3587

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

Preview Lab → · Contrast checker → · Palette generator →