#1B519E#1B519E

#1B519E is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.5% C 0.137 H 258.2°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B519E
RGB	rgb(27, 81, 158)
HSL	hsl(215, 71%, 36%)
HSV	hsv(215, 83%, 62%)
CMYK	cmyk(82.9%, 48.7%, 0%, 38%)
CIE-LAB	lab(35.17, 11.98, -46.78)
CIE-LCH	lch(35.17, 48.29, 284.37°)
OKLab	oklab(44.48% -0.0282 -0.1345)
OKLCH	oklch(44.48% 0.137 258.2)
XYZ	xyz(9.5637, 8.5853, 33.4942)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B519E #9E681B

analogous

#1B939E #1B519E #261B9E

triadic

#1B519E #9E1B51 #519E1B

tetradic

#1B519E #9E1B93 #9E681B #1B9E26

square

#1B519E #9E1B93 #9E681B #1B9E26

split-complementary

#1B519E #9E261B #939E1B

monochromatic

#091B35 #12366A #1B519E #246CD2 #528DE1

Accessibility & contrast

On white

7.73

#1B519E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1B519E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B519E

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B519E	#FFFFFF	#000000	##FFFFFF
##1B519E	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2559A1

Deuteranopia (green-blind)

#004D9C

Tritanopia (blue-blind)

#006470

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b519e;
/* rgb */ color: rgb(27, 81, 158);
/* oklch */ color: oklch(44.5% 0.137 258.2);

Tailwind

colors: {
  custom: {
    50: '#6e81bb',
    500: '#1b519e',
    950: '#000000',
  },
}

SCSS

$custom: #1b519e;
$custom-light: #6e81bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b519e",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 158
  },
  "hsl": {
    "h": 215.267,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.44481,
    "c": 0.13743,
    "h": 258.2
  },
  "luminance": 0.08586
}

Semantic roles & 50–950 ramp

primary

#1B519E

secondary

#C49551

accent

#A43AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1B519E

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

Preview Lab → · Contrast checker → · Palette generator →