#1C348B#1C348B

#1C348B is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.147 H 266.8°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#1C348B
RGB	rgb(28, 52, 139)
HSL	hsl(227, 66%, 33%)
HSV	hsv(227, 80%, 55%)
CMYK	cmyk(79.9%, 62.6%, 0%, 45.5%)
CIE-LAB	lab(25.46, 24.34, -50.93)
CIE-LCH	lch(25.46, 56.45, 295.54°)
OKLab	oklab(36.67% -0.0082 -0.1472)
OKLCH	oklch(36.67% 0.147 266.8)
XYZ	xyz(6.3655, 4.5662, 24.9670)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C348B #8B731C

analogous

#1C6B8B #1C348B #3B1C8B

triadic

#1C348B #8B1C34 #348B1C

tetradic

#1C348B #8B1C6B #8B731C #1C8B3B

square

#1C348B #8B1C6B #8B731C #1C8B3B

split-complementary

#1C348B #8B3B1C #6B8B1C

monochromatic

#070E25 #122158 #1C348B #2647BE #4767DA

Accessibility & contrast

On white

10.98

#1C348B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1C348B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C348B

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C348B	#FFFFFF	#000000	##FFFFFF
##1C348B	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003789

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c348b;
/* rgb */ color: rgb(28, 52, 139);
/* oklch */ color: oklch(36.7% 0.147 266.8);

Tailwind

colors: {
  custom: {
    50: '#6b6bae',
    500: '#1c348b',
    950: '#000000',
  },
}

SCSS

$custom: #1c348b;
$custom-light: #6b6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c348b",
  "rgb": {
    "r": 28,
    "g": 52,
    "b": 139
  },
  "hsl": {
    "h": 227.027,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36669,
    "c": 0.14747,
    "h": 266.8
  },
  "luminance": 0.04567
}

Semantic roles & 50–950 ramp

primary

#1C348B

secondary

#BCA347

accent

#C43EE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C348B

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

Preview Lab → · Contrast checker → · Palette generator →