#1B348C#1B348C

#1B348C is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.149 H 266.5°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B348C
RGB	rgb(27, 52, 140)
HSL	hsl(227, 68%, 33%)
HSV	hsv(227, 81%, 55%)
CMYK	cmyk(80.7%, 62.9%, 0%, 45.1%)
CIE-LAB	lab(25.51, 24.63, -51.48)
CIE-LCH	lch(25.51, 57.06, 295.57°)
OKLab	oklab(36.72% -0.009 -0.1489)
OKLCH	oklch(36.72% 0.149 266.5)
XYZ	xyz(6.4120, 4.5817, 25.3523)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B348C #8C731B

analogous

#1B6C8C #1B348C #3B1B8C

triadic

#1B348C #8C1B34 #348C1B

tetradic

#1B348C #8C1B6C #8C731B #1B8C3B

square

#1B348C #8C1B6C #8C731B #1B8C3B

split-complementary

#1B348C #8C3B1B #6C8C1B

monochromatic

#070E25 #112159 #1B348C #2547BF #4667DB

Accessibility & contrast

On white

10.96

#1B348C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1B348C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B348C

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B348C	#FFFFFF	#000000	##FFFFFF
##1B348C	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428F

Deuteranopia (green-blind)

#00378A

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b348c;
/* rgb */ color: rgb(27, 52, 140);
/* oklch */ color: oklch(36.7% 0.149 266.5);

Tailwind

colors: {
  custom: {
    50: '#6b6bae',
    500: '#1b348c',
    950: '#000000',
  },
}

SCSS

$custom: #1b348c;
$custom-light: #6b6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b348c",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 140
  },
  "hsl": {
    "h": 226.726,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.3672,
    "c": 0.14913,
    "h": 266.5
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#1B348C

secondary

#BDA346

accent

#C43DEB

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B348C

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

Preview Lab → · Contrast checker → · Palette generator →