#1C3688#1C3688

#1C3688 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.8% C 0.141 H 266.1°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#1C3688
RGB	rgb(28, 54, 136)
HSL	hsl(226, 66%, 32%)
HSV	hsv(226, 79%, 53%)
CMYK	cmyk(79.4%, 60.3%, 0%, 46.7%)
CIE-LAB	lab(25.75, 21.76, -48.59)
CIE-LCH	lch(25.75, 53.24, 294.12°)
OKLab	oklab(36.8% -0.0096 -0.1404)
OKLCH	oklch(36.8% 0.141 266.1)
XYZ	xyz(6.2404, 4.6621, 23.8588)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3688 #886E1C

analogous

#1C6C88 #1C3688 #381C88

triadic

#1C3688 #881C36 #36881C

tetradic

#1C3688 #881C6C #886E1C #1C8838

square

#1C3688 #881C6C #886E1C #1C8838

split-complementary

#1C3688 #88381C #6C881C

monochromatic

#070E22 #122255 #1C3688 #264ABB #4669D9

Accessibility & contrast

On white

10.87

#1C3688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1C3688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3688

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3688	#FFFFFF	#000000	##FFFFFF
##1C3688	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003886

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1c3688;
/* rgb */ color: rgb(28, 54, 136);
/* oklch */ color: oklch(36.8% 0.141 266.1);

Tailwind

colors: {
  custom: {
    50: '#6b6cab',
    500: '#1c3688',
    950: '#000000',
  },
}

SCSS

$custom: #1c3688;
$custom-light: #6b6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3688",
  "rgb": {
    "r": 28,
    "g": 54,
    "b": 136
  },
  "hsl": {
    "h": 225.556,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36803,
    "c": 0.14069,
    "h": 266.1
  },
  "luminance": 0.04663
}

Semantic roles & 50–950 ramp

primary

#1C3688

secondary

#BA9E45

accent

#C03FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C3688

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

Preview Lab → · Contrast checker → · Palette generator →