#1B3496#1B3496

#1B3496 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.7% C 0.163 H 266.8°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B3496
RGB	rgb(27, 52, 150)
HSL	hsl(228, 69%, 35%)
HSV	hsv(228, 82%, 59%)
CMYK	cmyk(82%, 65.3%, 0%, 41.2%)
CIE-LAB	lab(26.42, 28.55, -56.15)
CIE-LCH	lch(26.42, 62.99, 296.95°)
OKLab	oklab(37.67% -0.0092 -0.1625)
OKLCH	oklch(37.67% 0.163 266.8)
XYZ	xyz(7.1831, 4.8902, 29.4136)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3496 #967D1B

analogous

#1B7296 #1B3496 #401B96

triadic

#1B3496 #961B34 #34961B

tetradic

#1B3496 #961B72 #967D1B #1B9640

square

#1B3496 #961B72 #967D1B #1B9640

split-complementary

#1B3496 #96401B #72961B

monochromatic

#08102E #122262 #1B3496 #2446CA #4D6ADF

Accessibility & contrast

On white

10.62

#1B3496 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1B3496 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3496

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3496	#FFFFFF	#000000	##FFFFFF
##1B3496	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004499

Deuteranopia (green-blind)

#003994

Tritanopia (blue-blind)

#004E60

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3496;
/* rgb */ color: rgb(27, 52, 150);
/* oklch */ color: oklch(37.7% 0.163 266.8);

Tailwind

colors: {
  custom: {
    50: '#6e6bb6',
    500: '#1b3496',
    950: '#000000',
  },
}

SCSS

$custom: #1b3496;
$custom-light: #6e6bb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3496",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 150
  },
  "hsl": {
    "h": 227.805,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.37674,
    "c": 0.16281,
    "h": 266.8
  },
  "luminance": 0.04891
}

Semantic roles & 50–950 ramp

primary

#1B3496

secondary

#C1A94C

accent

#C83BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1B3496

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

Preview Lab → · Contrast checker → · Palette generator →