#1F499B#1F499B

#1F499B is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.6% C 0.142 H 261.9°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F499B
RGB	rgb(31, 73, 155)
HSL	hsl(220, 67%, 36%)
HSV	hsv(220, 80%, 61%)
CMYK	cmyk(80%, 52.9%, 0%, 39.2%)
CIE-LAB	lab(32.75, 16.60, -48.88)
CIE-LCH	lch(32.75, 51.62, 288.76°)
OKLab	oklab(42.59% -0.0199 -0.1408)
OKLCH	oklch(42.59% 0.142 261.9)
XYZ	xyz(8.8619, 7.4219, 31.9695)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F499B #9B711F

analogous

#1F879B #1F499B #331F9B

triadic

#1F499B #9B1F49 #499B1F

tetradic

#1F499B #9B1F87 #9B711F #1F9B33

square

#1F499B #9B1F87 #9B711F #1F9B33

split-complementary

#1F499B #9B331F #879B1F

monochromatic

#0B1935 #153168 #1F499B #2961CE #5785DD

Accessibility & contrast

On white

8.45

#1F499B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1F499B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F499B

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F499B	#FFFFFF	#000000	##FFFFFF
##1F499B	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10539E

Deuteranopia (green-blind)

#004899

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f499b;
/* rgb */ color: rgb(31, 73, 155);
/* oklch */ color: oklch(42.6% 0.142 261.9);

Tailwind

colors: {
  custom: {
    50: '#6f7bb9',
    500: '#1f499b',
    950: '#000000',
  },
}

SCSS

$custom: #1f499b;
$custom-light: #6f7bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f499b",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 155
  },
  "hsl": {
    "h": 219.677,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42591,
    "c": 0.14221,
    "h": 261.9
  },
  "luminance": 0.07423
}

Semantic roles & 50–950 ramp

primary

#1F499B

secondary

#C19C55

accent

#B03EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #1F499B

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

Preview Lab → · Contrast checker → · Palette generator →