#1B429B#1B429B

#1B429B is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.9% C 0.152 H 263.4°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B429B
RGB	rgb(27, 66, 155)
HSL	hsl(222, 70%, 36%)
HSV	hsv(222, 83%, 61%)
CMYK	cmyk(82.6%, 57.4%, 0%, 39.2%)
CIE-LAB	lab(30.63, 20.97, -52.33)
CIE-LCH	lch(30.63, 56.37, 291.84°)
OKLab	oklab(40.95% -0.0176 -0.1511)
OKLCH	oklch(40.95% 0.152 263.4)
XYZ	xyz(8.3145, 6.4950, 31.8194)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B429B #9B741B

analogous

#1B829B #1B429B #341B9B

triadic

#1B429B #9B1B42 #429B1B

tetradic

#1B429B #9B1B82 #9B741B #1B9B34

square

#1B429B #9B1B82 #9B741B #1B9B34

split-complementary

#1B429B #9B341B #829B1B

monochromatic

#091633 #122C67 #1B429B #2458CF #507CE0

Accessibility & contrast

On white

9.13

#1B429B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B429B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B429B

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B429B	#FFFFFF	#000000	##FFFFFF
##1B429B	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9E

Deuteranopia (green-blind)

#004299

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b429b;
/* rgb */ color: rgb(27, 66, 155);
/* oklch */ color: oklch(40.9% 0.152 263.4);

Tailwind

colors: {
  custom: {
    50: '#6e75b9',
    500: '#1b429b',
    950: '#000000',
  },
}

SCSS

$custom: #1b429b;
$custom-light: #6e75b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b429b",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 155
  },
  "hsl": {
    "h": 221.719,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40947,
    "c": 0.15216,
    "h": 263.4
  },
  "luminance": 0.06496
}

Semantic roles & 50–950 ramp

primary

#1B429B

secondary

#C3A04F

accent

#B73BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B429B

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

Preview Lab → · Contrast checker → · Palette generator →