#1B3F96#1B3F96

#1B3F96 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.149 H 263.9°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F96
RGB	rgb(27, 63, 150)
HSL	hsl(222, 69%, 35%)
HSV	hsv(222, 82%, 59%)
CMYK	cmyk(82%, 58%, 0%, 41.2%)
CIE-LAB	lab(29.38, 21.03, -51.31)
CIE-LCH	lch(29.38, 55.45, 292.29°)
OKLab	oklab(39.88% -0.0159 -0.1482)
OKLCH	oklch(39.88% 0.149 263.9)
XYZ	xyz(7.7326, 5.9891, 29.5967)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F96 #96721B

analogous

#1B7D96 #1B3F96 #341B96

triadic

#1B3F96 #961B3F #3F961B

tetradic

#1B3F96 #961B7D #96721B #1B9634

square

#1B3F96 #961B7D #96721B #1B9634

split-complementary

#1B3F96 #96341B #7D961B

monochromatic

#08132E #122962 #1B3F96 #2455CA #4D77DF

Accessibility & contrast

On white

9.55

#1B3F96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1B3F96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F96

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F96	#FFFFFF	#000000	##FFFFFF
##1B3F96	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B99

Deuteranopia (green-blind)

#004094

Tritanopia (blue-blind)

#005564

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3f96;
/* rgb */ color: rgb(27, 63, 150);
/* oklch */ color: oklch(39.9% 0.149 263.9);

Tailwind

colors: {
  custom: {
    50: '#6d73b6',
    500: '#1b3f96',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f96;
$custom-light: #6d73b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f96",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 150
  },
  "hsl": {
    "h": 222.439,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39884,
    "c": 0.14904,
    "h": 263.9
  },
  "luminance": 0.0599
}

Semantic roles & 50–950 ramp

primary

#1B3F96

secondary

#C19F4C

accent

#B93BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3F96

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

Preview Lab → · Contrast checker → · Palette generator →