#1B348E#1B348E

#1B348E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.9% C 0.152 H 266.6°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#1B348E
RGB	rgb(27, 52, 142)
HSL	hsl(227, 68%, 33%)
HSV	hsv(227, 81%, 56%)
CMYK	cmyk(81%, 63.4%, 0%, 44.3%)
CIE-LAB	lab(25.69, 25.42, -52.42)
CIE-LCH	lch(25.69, 58.26, 295.87°)
OKLab	oklab(36.91% -0.009 -0.1516)
OKLCH	oklch(36.91% 0.152 266.6)
XYZ	xyz(6.5608, 4.6412, 26.1360)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B348E #8E751B

analogous

#1B6D8E #1B348E #3C1B8E

triadic

#1B348E #8E1B34 #348E1B

tetradic

#1B348E #8E1B6D #8E751B #1B8E3C

square

#1B348E #8E1B6D #8E751B #1B8E3C

split-complementary

#1B348E #8E3C1B #6D8E1B

monochromatic

#070E27 #11215B #1B348E #2547C1 #4768DC

Accessibility & contrast

On white

10.89

#1B348E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B348E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B348E

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B348E	#FFFFFF	#000000	##FFFFFF
##1B348E	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004291

Deuteranopia (green-blind)

#00388C

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b348e;
/* rgb */ color: rgb(27, 52, 142);
/* oklch */ color: oklch(36.9% 0.152 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c6bb0',
    500: '#1b348e',
    950: '#000000',
  },
}

SCSS

$custom: #1b348e;
$custom-light: #6c6bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b348e",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 142
  },
  "hsl": {
    "h": 226.957,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.36908,
    "c": 0.1519,
    "h": 266.6
  },
  "luminance": 0.04642
}

Semantic roles & 50–950 ramp

primary

#1B348E

secondary

#BEA447

accent

#C53DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B348E

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

Preview Lab → · Contrast checker → · Palette generator →