#1B479A#1B479A

#1B479A is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.9% C 0.144 H 261.6°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B479A
RGB	rgb(27, 71, 154)
HSL	hsl(219, 70%, 35%)
HSV	hsv(219, 82%, 60%)
CMYK	cmyk(82.5%, 53.9%, 0%, 39.6%)
CIE-LAB	lab(31.97, 17.15, -49.54)
CIE-LCH	lch(31.97, 52.43, 289.09°)
OKLab	oklab(41.94% -0.0212 -0.1428)
OKLCH	oklch(41.94% 0.144 261.6)
XYZ	xyz(8.5359, 7.0716, 31.4807)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B479A #9A6E1B

analogous

#1B869A #1B479A #2F1B9A

triadic

#1B479A #9A1B47 #479A1B

tetradic

#1B479A #9A1B86 #9A6E1B #1B9A2F

square

#1B479A #9A1B86 #9A6E1B #1B9A2F

split-complementary

#1B479A #9A2F1B #869A1B

monochromatic

#091732 #122F66 #1B479A #245FCE #4F81E0

Accessibility & contrast

On white

8.70

#1B479A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B479A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B479A

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B479A	#FFFFFF	#000000	##FFFFFF
##1B479A	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06519D

Deuteranopia (green-blind)

#004698

Tritanopia (blue-blind)

#005B69

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b479a;
/* rgb */ color: rgb(27, 71, 154);
/* oklch */ color: oklch(41.9% 0.144 261.6);

Tailwind

colors: {
  custom: {
    50: '#6e79b8',
    500: '#1b479a',
    950: '#000000',
  },
}

SCSS

$custom: #1b479a;
$custom-light: #6e79b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b479a",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 154
  },
  "hsl": {
    "h": 219.213,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.41938,
    "c": 0.14441,
    "h": 261.6
  },
  "luminance": 0.07073
}

Semantic roles & 50–950 ramp

primary

#1B479A

secondary

#C39A4E

accent

#AF3BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B479A

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

Preview Lab → · Contrast checker → · Palette generator →