#1B3E9A#1B3E9A

#1B3E9A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.156 H 264.5°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E9A
RGB	rgb(27, 62, 154)
HSL	hsl(223, 70%, 35%)
HSV	hsv(223, 82%, 60%)
CMYK	cmyk(82.5%, 59.7%, 0%, 39.6%)
CIE-LAB	lab(29.44, 23.31, -53.66)
CIE-LCH	lch(29.44, 58.50, 293.49°)
OKLab	oklab(40.03% -0.0151 -0.1551)
OKLCH	oklch(40.03% 0.156 264.5)
XYZ	xyz(8.0053, 6.0104, 31.3038)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E9A #9A771B

analogous

#1B7D9A #1B3E9A #381B9A

triadic

#1B3E9A #9A1B3E #3E9A1B

tetradic

#1B3E9A #9A1B7D #9A771B #1B9A38

square

#1B3E9A #9A1B7D #9A771B #1B9A38

split-complementary

#1B3E9A #9A381B #7D9A1B

monochromatic

#091432 #122966 #1B3E9A #2453CE #4F77E0

Accessibility & contrast

On white

9.54

#1B3E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1B3E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E9A

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E9A	#FFFFFF	#000000	##FFFFFF
##1B3E9A	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3e9a;
/* rgb */ color: rgb(27, 62, 154);
/* oklch */ color: oklch(40.0% 0.156 264.5);

Tailwind

colors: {
  custom: {
    50: '#6e72b9',
    500: '#1b3e9a',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e9a;
$custom-light: #6e72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e9a",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 154
  },
  "hsl": {
    "h": 223.465,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40027,
    "c": 0.15584,
    "h": 264.5
  },
  "luminance": 0.06011
}

Semantic roles & 50–950 ramp

primary

#1B3E9A

secondary

#C3A34E

accent

#BC3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1B3E9A

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

Preview Lab → · Contrast checker → · Palette generator →