#1B2477#1B2477

#1B2477 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.6% C 0.140 H 270.8°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B2477
RGB	rgb(27, 36, 119)
HSL	hsl(234, 63%, 29%)
HSV	hsv(234, 77%, 47%)
CMYK	cmyk(77.3%, 69.7%, 0%, 53.3%)
CIE-LAB	lab(19.33, 27.39, -48.36)
CIE-LCH	lch(19.33, 55.58, 299.52°)
OKLab	oklab(31.57% 0.002 -0.1399)
OKLCH	oklch(31.57% 0.14 270.8)
XYZ	xyz(4.4115, 2.8262, 17.7622)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2477 #776E1B

analogous

#1B5277 #1B2477 #401B77

triadic

#1B2477 #771B24 #24771B

tetradic

#1B2477 #771B52 #776E1B #1B7740

square

#1B2477 #771B52 #776E1B #1B7740

split-complementary

#1B2477 #77401B #52771B

monochromatic

#060819 #101545 #1B2477 #2633A9 #3A49D2

Accessibility & contrast

On white

13.42

#1B2477 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B2477 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2477

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2477	#FFFFFF	#000000	##FFFFFF
##1B2477	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337A

Deuteranopia (green-blind)

#002B75

Tritanopia (blue-blind)

#003A4A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2477;
/* rgb */ color: rgb(27, 36, 119);
/* oklch */ color: oklch(31.6% 0.140 270.8);

Tailwind

colors: {
  custom: {
    50: '#675f9f',
    500: '#1b2477',
    950: '#000000',
  },
}

SCSS

$custom: #1b2477;
$custom-light: #675f9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2477",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 119
  },
  "hsl": {
    "h": 234.13,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.3157,
    "c": 0.13989,
    "h": 270.8
  },
  "luminance": 0.02827
}

Semantic roles & 50–950 ramp

primary

#1B2477

secondary

#ABA142

accent

#D642E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1B2477

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

Preview Lab → · Contrast checker → · Palette generator →