#1C347B#1C347B

#1C347B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.125 H 266.0°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C347B
RGB	rgb(28, 52, 123)
HSL	hsl(225, 63%, 30%)
HSV	hsv(225, 77%, 48%)
CMYK	cmyk(77.2%, 57.7%, 0%, 51.8%)
CIE-LAB	lab(24.10, 17.93, -43.11)
CIE-LCH	lch(24.10, 46.69, 292.58°)
OKLab	oklab(35.23% -0.0087 -0.1243)
OKLCH	oklch(35.23% 0.125 266)
XYZ	xyz(5.2808, 4.1323, 19.2544)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C347B #7B631C

analogous

#1C647B #1C347B #341C7B

triadic

#1C347B #7B1C34 #347B1C

tetradic

#1C347B #7B1C64 #7B631C #1C7B34

square

#1C347B #7B1C64 #7B631C #1C7B34

split-complementary

#1C347B #7B341C #647B1C

monochromatic

#060B19 #111F49 #1C347B #2749AD #3E64D3

Accessibility & contrast

On white

11.50

#1C347B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1C347B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C347B

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C347B	#FFFFFF	#000000	##FFFFFF
##1C347B	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7D

Deuteranopia (green-blind)

#00357A

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1c347b;
/* rgb */ color: rgb(28, 52, 123);
/* oklch */ color: oklch(35.2% 0.125 266.0);

Tailwind

colors: {
  custom: {
    50: '#676ba2',
    500: '#1c347b',
    950: '#000000',
  },
}

SCSS

$custom: #1c347b;
$custom-light: #676ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c347b",
  "rgb": {
    "r": 28,
    "g": 52,
    "b": 123
  },
  "hsl": {
    "h": 224.842,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.3523,
    "c": 0.1246,
    "h": 266
  },
  "luminance": 0.04133
}

Semantic roles & 50–950 ramp

primary

#1C347B

secondary

#AF9444

accent

#BC42E6

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C347B

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

Preview Lab → · Contrast checker → · Palette generator →