#1B3494#1B3494

#1B3494 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.160 H 266.7°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B3494
RGB	rgb(27, 52, 148)
HSL	hsl(228, 69%, 34%)
HSV	hsv(228, 82%, 58%)
CMYK	cmyk(81.8%, 64.9%, 0%, 42%)
CIE-LAB	lab(26.23, 27.77, -55.23)
CIE-LCH	lch(26.23, 61.82, 296.70°)
OKLab	oklab(37.48% -0.0091 -0.1598)
OKLCH	oklch(37.48% 0.16 266.7)
XYZ	xyz(7.0234, 4.8263, 28.5726)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3494 #947B1B

analogous

#1B7194 #1B3494 #3E1B94

triadic

#1B3494 #941B34 #34941B

tetradic

#1B3494 #941B71 #947B1B #1B943E

square

#1B3494 #941B71 #947B1B #1B943E

split-complementary

#1B3494 #943E1B #71941B

monochromatic

#08102C #122260 #1B3494 #2446C8 #4B6ADE

Accessibility & contrast

On white

10.68

#1B3494 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1B3494 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3494

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3494	#FFFFFF	#000000	##FFFFFF
##1B3494	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004497

Deuteranopia (green-blind)

#003892

Tritanopia (blue-blind)

#004D5F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3494;
/* rgb */ color: rgb(27, 52, 148);
/* oklch */ color: oklch(37.5% 0.160 266.7);

Tailwind

colors: {
  custom: {
    50: '#6e6bb4',
    500: '#1b3494',
    950: '#000000',
  },
}

SCSS

$custom: #1b3494;
$custom-light: #6e6bb4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3494",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 148
  },
  "hsl": {
    "h": 227.603,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37481,
    "c": 0.16011,
    "h": 266.7
  },
  "luminance": 0.04827
}

Semantic roles & 50–950 ramp

primary

#1B3494

secondary

#C0A84B

accent

#C83CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B3494

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

Preview Lab → · Contrast checker → · Palette generator →