#1B429C#1B429C

#1B429C is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.154 H 263.4°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B429C
RGB	rgb(27, 66, 156)
HSL	hsl(222, 70%, 36%)
HSV	hsv(222, 83%, 61%)
CMYK	cmyk(82.7%, 57.7%, 0%, 38.8%)
CIE-LAB	lab(30.71, 21.37, -52.80)
CIE-LCH	lch(30.71, 56.97, 292.04°)
OKLab	oklab(41.03% -0.0176 -0.1525)
OKLCH	oklch(41.03% 0.154 263.4)
XYZ	xyz(8.3988, 6.5287, 32.2636)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B429C #9C751B

analogous

#1B829C #1B429C #341B9C

triadic

#1B429C #9C1B42 #429C1B

tetradic

#1B429C #9C1B82 #9C751B #1B9C34

square

#1B429C #9C1B82 #9C751B #1B9C34

split-complementary

#1B429C #9C341B #829C1B

monochromatic

#091634 #122C68 #1B429C #2458D0 #517CE1

Accessibility & contrast

On white

9.11

#1B429C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B429C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B429C

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B429C	#FFFFFF	#000000	##FFFFFF
##1B429C	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9F

Deuteranopia (green-blind)

#00439A

Tritanopia (blue-blind)

#005968

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b429c;
/* rgb */ color: rgb(27, 66, 156);
/* oklch */ color: oklch(41.0% 0.154 263.4);

Tailwind

colors: {
  custom: {
    50: '#6f75ba',
    500: '#1b429c',
    950: '#000000',
  },
}

SCSS

$custom: #1b429c;
$custom-light: #6f75ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b429c",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 156
  },
  "hsl": {
    "h": 221.86,
    "s": 70.492,
    "l": 35.882
  },
  "oklch": {
    "l": 0.41033,
    "c": 0.15354,
    "h": 263.4
  },
  "luminance": 0.0653
}

Semantic roles & 50–950 ramp

primary

#1B429C

secondary

#C3A04F

accent

#B73BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B429C

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

Preview Lab → · Contrast checker → · Palette generator →