#1F419B#1F419B

#1F419B is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.152 H 264.7°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F419B
RGB	rgb(31, 65, 155)
HSL	hsl(224, 67%, 36%)
HSV	hsv(224, 80%, 61%)
CMYK	cmyk(80%, 58.1%, 0%, 39.2%)
CIE-LAB	lab(30.49, 22.06, -52.55)
CIE-LCH	lch(30.49, 56.99, 292.77°)
OKLab	oklab(40.88% -0.0141 -0.1517)
OKLCH	oklch(40.88% 0.152 264.7)
XYZ	xyz(8.3697, 6.4375, 31.8054)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F419B #9B791F

analogous

#1F7F9B #1F419B #3B1F9B

triadic

#1F419B #9B1F41 #419B1F

tetradic

#1F419B #9B1F7F #9B791F #1F9B3B

square

#1F419B #9B1F7F #9B791F #1F9B3B

split-complementary

#1F419B #9B3B1F #7F9B1F

monochromatic

#0B1635 #152C68 #1F419B #2956CE #577CDD

Accessibility & contrast

On white

9.18

#1F419B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F419B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F419B

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F419B	#FFFFFF	#000000	##FFFFFF
##1F419B	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9E

Deuteranopia (green-blind)

#004299

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f419b;
/* rgb */ color: rgb(31, 65, 155);
/* oklch */ color: oklch(40.9% 0.152 264.7);

Tailwind

colors: {
  custom: {
    50: '#7075b9',
    500: '#1f419b',
    950: '#000000',
  },
}

SCSS

$custom: #1f419b;
$custom-light: #7075b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f419b",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 155
  },
  "hsl": {
    "h": 223.548,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40883,
    "c": 0.15238,
    "h": 264.7
  },
  "luminance": 0.06438
}

Semantic roles & 50–950 ramp

primary

#1F419B

secondary

#C1A355

accent

#BB3EEA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F419B

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

Preview Lab → · Contrast checker → · Palette generator →