#1B429F#1B429F

#1B429F is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.158 H 263.7°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B429F
RGB	rgb(27, 66, 159)
HSL	hsl(222, 71%, 36%)
HSV	hsv(222, 83%, 62%)
CMYK	cmyk(83%, 58.5%, 0%, 37.6%)
CIE-LAB	lab(30.95, 22.57, -54.22)
CIE-LCH	lch(30.95, 58.73, 292.60°)
OKLab	oklab(41.29% -0.0174 -0.1567)
OKLCH	oklch(41.29% 0.158 263.7)
XYZ	xyz(8.6560, 6.6316, 33.6180)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B429F #9F781B

analogous

#1B849F #1B429F #361B9F

triadic

#1B429F #9F1B42 #429F1B

tetradic

#1B429F #9F1B84 #9F781B #1B9F36

square

#1B429F #9F1B84 #9F781B #1B9F36

split-complementary

#1B429F #9F361B #849F1B

monochromatic

#091736 #122C6B #1B429F #2458D3 #537DE2

Accessibility & contrast

On white

9.03

#1B429F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B429F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B429F

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B429F	#FFFFFF	#000000	##FFFFFF
##1B429F	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA2

Deuteranopia (green-blind)

#00439D

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b429f;
/* rgb */ color: rgb(27, 66, 159);
/* oklch */ color: oklch(41.3% 0.158 263.7);

Tailwind

colors: {
  custom: {
    50: '#6f75bc',
    500: '#1b429f',
    950: '#000000',
  },
}

SCSS

$custom: #1b429f;
$custom-light: #6f75bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b429f",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 159
  },
  "hsl": {
    "h": 222.273,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.41293,
    "c": 0.15766,
    "h": 263.7
  },
  "luminance": 0.06633
}

Semantic roles & 50–950 ramp

primary

#1B429F

secondary

#C5A251

accent

#B93AEE

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B429F

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

Preview Lab → · Contrast checker → · Palette generator →