#1B499F#1B499F

#1B499F is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.8% C 0.149 H 261.5°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B499F
RGB	rgb(27, 73, 159)
HSL	hsl(219, 71%, 36%)
HSV	hsv(219, 83%, 62%)
CMYK	cmyk(83%, 54.1%, 0%, 37.6%)
CIE-LAB	lab(32.92, 17.80, -51.03)
CIE-LCH	lch(32.92, 54.04, 289.23°)
OKLab	oklab(42.78% -0.0221 -0.1472)
OKLCH	oklch(42.78% 0.149 261.5)
XYZ	xyz(9.0903, 7.5002, 33.7627)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B499F #9F711B

analogous

#1B8B9F #1B499F #2F1B9F

triadic

#1B499F #9F1B49 #499F1B

tetradic

#1B499F #9F1B8B #9F711B #1B9F2F

square

#1B499F #9F1B8B #9F711B #1B9F2F

split-complementary

#1B499F #9F2F1B #8B9F1B

monochromatic

#091936 #12316B #1B499F #2461D3 #5385E2

Accessibility & contrast

On white

8.40

#1B499F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B499F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B499F

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B499F	#FFFFFF	#000000	##FFFFFF
##1B499F	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0354A2

Deuteranopia (green-blind)

#00489D

Tritanopia (blue-blind)

#005E6D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b499f;
/* rgb */ color: rgb(27, 73, 159);
/* oklch */ color: oklch(42.8% 0.149 261.5);

Tailwind

colors: {
  custom: {
    50: '#6f7bbc',
    500: '#1b499f',
    950: '#000000',
  },
}

SCSS

$custom: #1b499f;
$custom-light: #6f7bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b499f",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 159
  },
  "hsl": {
    "h": 219.091,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4278,
    "c": 0.14883,
    "h": 261.5
  },
  "luminance": 0.07501
}

Semantic roles & 50–950 ramp

primary

#1B499F

secondary

#C59C51

accent

#AF3AEE

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B499F

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

Preview Lab → · Contrast checker → · Palette generator →