#1B348F#1B348F

#1B348F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.153 H 266.6°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B348F
RGB	rgb(27, 52, 143)
HSL	hsl(227, 68%, 33%)
HSV	hsv(227, 81%, 56%)
CMYK	cmyk(81.1%, 63.6%, 0%, 43.9%)
CIE-LAB	lab(25.78, 25.81, -52.89)
CIE-LCH	lch(25.78, 58.86, 296.01°)
OKLab	oklab(37% -0.009 -0.153)
OKLCH	oklch(37% 0.153 266.6)
XYZ	xyz(6.6362, 4.6714, 26.5332)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B348F #8F761B

analogous

#1B6E8F #1B348F #3C1B8F

triadic

#1B348F #8F1B34 #348F1B

tetradic

#1B348F #8F1B6E #8F761B #1B8F3C

square

#1B348F #8F1B6E #8F761B #1B8F3C

split-complementary

#1B348F #8F3C1B #6E8F1B

monochromatic

#080F28 #11215C #1B348F #2547C2 #4868DC

Accessibility & contrast

On white

10.86

#1B348F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B348F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B348F

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B348F	#FFFFFF	#000000	##FFFFFF
##1B348F	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#00388D

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b348f;
/* rgb */ color: rgb(27, 52, 143);
/* oklch */ color: oklch(37.0% 0.153 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c6bb1',
    500: '#1b348f',
    950: '#000000',
  },
}

SCSS

$custom: #1b348f;
$custom-light: #6c6bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b348f",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 143
  },
  "hsl": {
    "h": 227.069,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37002,
    "c": 0.15328,
    "h": 266.6
  },
  "luminance": 0.04672
}

Semantic roles & 50–950 ramp

primary

#1B348F

secondary

#BEA548

accent

#C63DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B348F

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

Preview Lab → · Contrast checker → · Palette generator →