#1B439E#1B439E

#1B439E is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.4% C 0.155 H 263.3°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B439E
RGB	rgb(27, 67, 158)
HSL	hsl(222, 71%, 36%)
HSV	hsv(222, 83%, 62%)
CMYK	cmyk(82.9%, 57.6%, 0%, 38%)
CIE-LAB	lab(31.15, 21.49, -53.30)
CIE-LCH	lch(31.15, 57.47, 291.96°)
OKLab	oklab(41.42% -0.0181 -0.154)
OKLCH	oklch(41.42% 0.155 263.3)
XYZ	xyz(8.6285, 6.7149, 33.1825)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B439E #9E761B

analogous

#1B859E #1B439E #341B9E

triadic

#1B439E #9E1B43 #439E1B

tetradic

#1B439E #9E1B85 #9E761B #1B9E34

square

#1B439E #9E1B85 #9E761B #1B9E34

split-complementary

#1B439E #9E341B #859E1B

monochromatic

#091735 #122D6A #1B439E #2459D2 #527EE1

Accessibility & contrast

On white

8.96

#1B439E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1B439E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B439E

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B439E	#FFFFFF	#000000	##FFFFFF
##1B439E	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#005A6A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b439e;
/* rgb */ color: rgb(27, 67, 158);
/* oklch */ color: oklch(41.4% 0.155 263.3);

Tailwind

colors: {
  custom: {
    50: '#6f76bb',
    500: '#1b439e',
    950: '#000000',
  },
}

SCSS

$custom: #1b439e;
$custom-light: #6f76bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b439e",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 158
  },
  "hsl": {
    "h": 221.679,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41415,
    "c": 0.15503,
    "h": 263.3
  },
  "luminance": 0.06716
}

Semantic roles & 50–950 ramp

primary

#1B439E

secondary

#C4A151

accent

#B73AEE

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B439E

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

Preview Lab → · Contrast checker → · Palette generator →