#1B3B96#1B3B96

#1B3B96 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.154 H 265.0°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B3B96
RGB	rgb(27, 59, 150)
HSL	hsl(224, 69%, 35%)
HSV	hsv(224, 82%, 59%)
CMYK	cmyk(82%, 60.7%, 0%, 41.2%)
CIE-LAB	lab(28.28, 23.78, -53.11)
CIE-LCH	lch(28.28, 58.19, 294.12°)
OKLab	oklab(39.06% -0.0133 -0.1535)
OKLCH	oklch(39.06% 0.154 265)
XYZ	xyz(7.5190, 5.5621, 29.5255)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3B96 #96761B

analogous

#1B7996 #1B3B96 #381B96

triadic

#1B3B96 #961B3B #3B961B

tetradic

#1B3B96 #961B79 #96761B #1B9638

square

#1B3B96 #961B79 #96761B #1B9638

split-complementary

#1B3B96 #96381B #79961B

monochromatic

#08122E #122762 #1B3B96 #244FCA #4D73DF

Accessibility & contrast

On white

9.94

#1B3B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B3B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3B96

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3B96	#FFFFFF	#000000	##FFFFFF
##1B3B96	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004999

Deuteranopia (green-blind)

#003D94

Tritanopia (blue-blind)

#005262

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3b96;
/* rgb */ color: rgb(27, 59, 150);
/* oklch */ color: oklch(39.1% 0.154 265.0);

Tailwind

colors: {
  custom: {
    50: '#6e70b6',
    500: '#1b3b96',
    950: '#000000',
  },
}

SCSS

$custom: #1b3b96;
$custom-light: #6e70b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3b96",
  "rgb": {
    "r": 27,
    "g": 59,
    "b": 150
  },
  "hsl": {
    "h": 224.39,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39055,
    "c": 0.15413,
    "h": 265
  },
  "luminance": 0.05563
}

Semantic roles & 50–950 ramp

primary

#1B3B96

secondary

#C1A34C

accent

#BE3BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3B96

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

Preview Lab → · Contrast checker → · Palette generator →