#1C3A87#1C3A87

#1C3A87 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.134 H 264.6°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A87
RGB	rgb(28, 58, 135)
HSL	hsl(223, 66%, 32%)
HSV	hsv(223, 79%, 53%)
CMYK	cmyk(79.3%, 57%, 0%, 47.1%)
CIE-LAB	lab(26.80, 18.56, -46.27)
CIE-LCH	lch(26.80, 49.85, 291.86°)
OKLab	oklab(37.56% -0.0126 -0.1335)
OKLCH	oklch(37.56% 0.134 264.6)
XYZ	xyz(6.3636, 5.0215, 23.5508)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A87 #87691C

analogous

#1C6F87 #1C3A87 #341C87

triadic

#1C3A87 #871C3A #3A871C

tetradic

#1C3A87 #871C6F #87691C #1C8734

square

#1C3A87 #871C6F #87691C #1C8734

split-complementary

#1C3A87 #87341C #6F871C

monochromatic

#070E22 #112454 #1C3A87 #2750BA #456ED8

Accessibility & contrast

On white

10.48

#1C3A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1C3A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A87

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A87	#FFFFFF	#000000	##FFFFFF
##1C3A87	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448A

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c3a87;
/* rgb */ color: rgb(28, 58, 135);
/* oklch */ color: oklch(37.6% 0.134 264.6);

Tailwind

colors: {
  custom: {
    50: '#6a6fab',
    500: '#1c3a87',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a87;
$custom-light: #6a6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a87",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 223.178,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37563,
    "c": 0.13405,
    "h": 264.6
  },
  "luminance": 0.05022
}

Semantic roles & 50–950 ramp

primary

#1C3A87

secondary

#BA9945

accent

#B93FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1C3A87

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

Preview Lab → · Contrast checker → · Palette generator →