#1B3994#1B3994

#1B3994 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.154 H 265.5°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B3994
RGB	rgb(27, 57, 148)
HSL	hsl(225, 69%, 34%)
HSV	hsv(225, 82%, 58%)
CMYK	cmyk(81.8%, 61.5%, 0%, 42%)
CIE-LAB	lab(27.56, 24.36, -53.05)
CIE-LCH	lch(27.56, 58.38, 294.66°)
OKLab	oklab(38.47% -0.0121 -0.1534)
OKLCH	oklch(38.47% 0.154 265.5)
XYZ	xyz(7.2585, 5.2965, 28.6510)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3994 #94761B

analogous

#1B7694 #1B3994 #3A1B94

triadic

#1B3994 #941B39 #39941B

tetradic

#1B3994 #941B76 #94761B #1B943A

square

#1B3994 #941B76 #94761B #1B943A

split-complementary

#1B3994 #943A1B #76941B

monochromatic

#08112C #122560 #1B3994 #244DC8 #4B70DE

Accessibility & contrast

On white

10.20

#1B3994 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1B3994 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3994

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3994	#FFFFFF	#000000	##FFFFFF
##1B3994	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004797

Deuteranopia (green-blind)

#003C92

Tritanopia (blue-blind)

#005061

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3994;
/* rgb */ color: rgb(27, 57, 148);
/* oklch */ color: oklch(38.5% 0.154 265.5);

Tailwind

colors: {
  custom: {
    50: '#6d6fb4',
    500: '#1b3994',
    950: '#000000',
  },
}

SCSS

$custom: #1b3994;
$custom-light: #6d6fb4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3994",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 148
  },
  "hsl": {
    "h": 225.124,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.38467,
    "c": 0.15389,
    "h": 265.5
  },
  "luminance": 0.05297
}

Semantic roles & 50–950 ramp

primary

#1B3994

secondary

#C0A34B

accent

#C03CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3994

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

Preview Lab → · Contrast checker → · Palette generator →