#1B429A#1B429A

#1B429A is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.9% C 0.151 H 263.3°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B429A
RGB	rgb(27, 66, 154)
HSL	hsl(222, 70%, 35%)
HSV	hsv(222, 82%, 60%)
CMYK	cmyk(82.5%, 57.1%, 0%, 39.6%)
CIE-LAB	lab(30.55, 20.57, -51.85)
CIE-LCH	lch(30.55, 55.78, 291.64°)
OKLab	oklab(40.86% -0.0177 -0.1497)
OKLCH	oklch(40.86% 0.151 263.3)
XYZ	xyz(8.2309, 6.4615, 31.3790)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B429A #9A731B

analogous

#1B819A #1B429A #331B9A

triadic

#1B429A #9A1B42 #429A1B

tetradic

#1B429A #9A1B81 #9A731B #1B9A33

square

#1B429A #9A1B81 #9A731B #1B9A33

split-complementary

#1B429A #9A331B #819A1B

monochromatic

#091532 #122C66 #1B429A #2458CE #4F7CE0

Accessibility & contrast

On white

9.16

#1B429A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B429A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B429A

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B429A	#FFFFFF	#000000	##FFFFFF
##1B429A	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9D

Deuteranopia (green-blind)

#004298

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b429a;
/* rgb */ color: rgb(27, 66, 154);
/* oklch */ color: oklch(40.9% 0.151 263.3);

Tailwind

colors: {
  custom: {
    50: '#6e75b8',
    500: '#1b429a',
    950: '#000000',
  },
}

SCSS

$custom: #1b429a;
$custom-light: #6e75b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b429a",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 154
  },
  "hsl": {
    "h": 221.575,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.40862,
    "c": 0.15077,
    "h": 263.3
  },
  "luminance": 0.06463
}

Semantic roles & 50–950 ramp

primary

#1B429A

secondary

#C39F4E

accent

#B63BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B429A

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

Preview Lab → · Contrast checker → · Palette generator →