#1C347F#1C347F

#1C347F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.130 H 266.3°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#1C347F
RGB	rgb(28, 52, 127)
HSL	hsl(225, 64%, 30%)
HSV	hsv(225, 78%, 50%)
CMYK	cmyk(78%, 59.1%, 0%, 50.2%)
CIE-LAB	lab(24.43, 19.54, -45.10)
CIE-LCH	lch(24.43, 49.16, 293.43°)
OKLab	oklab(35.58% -0.0085 -0.1301)
OKLCH	oklch(35.58% 0.13 266.3)
XYZ	xyz(5.5363, 4.2346, 20.6001)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C347F #7F671C

analogous

#1C657F #1C347F #361C7F

triadic

#1C347F #7F1C34 #347F1C

tetradic

#1C347F #7F1C65 #7F671C #1C7F36

square

#1C347F #7F1C65 #7F671C #1C7F36

split-complementary

#1C347F #7F361C #657F1C

monochromatic

#060B1B #111F4D #1C347F #2749B1 #4064D5

Accessibility & contrast

On white

11.37

#1C347F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1C347F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C347F

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C347F	#FFFFFF	#000000	##FFFFFF
##1C347F	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F82

Deuteranopia (green-blind)

#00367E

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c347f;
/* rgb */ color: rgb(28, 52, 127);
/* oklch */ color: oklch(35.6% 0.130 266.3);

Tailwind

colors: {
  custom: {
    50: '#686ba5',
    500: '#1c347f',
    950: '#000000',
  },
}

SCSS

$custom: #1c347f;
$custom-light: #686ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c347f",
  "rgb": {
    "r": 28,
    "g": 52,
    "b": 127
  },
  "hsl": {
    "h": 225.455,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3558,
    "c": 0.13042,
    "h": 266.3
  },
  "luminance": 0.04235
}

Semantic roles & 50–950 ramp

primary

#1C347F

secondary

#B39844

accent

#BF41E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C347F

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

Preview Lab → · Contrast checker → · Palette generator →