#1F4998#1F4998

#1F4998 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.4% C 0.138 H 261.5°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F4998
RGB	rgb(31, 73, 152)
HSL	hsl(219, 66%, 36%)
HSV	hsv(219, 80%, 60%)
CMYK	cmyk(79.6%, 52%, 0%, 40.4%)
CIE-LAB	lab(32.53, 15.40, -47.42)
CIE-LCH	lch(32.53, 49.85, 288.00°)
OKLab	oklab(42.36% -0.0203 -0.1365)
OKLCH	oklch(42.36% 0.138 261.5)
XYZ	xyz(8.6131, 7.3224, 30.6591)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4998 #986E1F

analogous

#1F8598 #1F4998 #321F98

triadic

#1F4998 #981F49 #49981F

tetradic

#1F4998 #981F85 #986E1F #1F9832

square

#1F4998 #981F85 #986E1F #1F9832

split-complementary

#1F4998 #98321F #85981F

monochromatic

#0A1832 #153165 #1F4998 #2961CB #5584DC

Accessibility & contrast

On white

8.52

#1F4998 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1F4998 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4998

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4998	#FFFFFF	#000000	##FFFFFF
##1F4998	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16529B

Deuteranopia (green-blind)

#004796

Tritanopia (blue-blind)

#005C69

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4998;
/* rgb */ color: rgb(31, 73, 152);
/* oklch */ color: oklch(42.4% 0.138 261.5);

Tailwind

colors: {
  custom: {
    50: '#6e7bb7',
    500: '#1f4998',
    950: '#000000',
  },
}

SCSS

$custom: #1f4998;
$custom-light: #6e7bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4998",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 152
  },
  "hsl": {
    "h": 219.174,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42355,
    "c": 0.138,
    "h": 261.5
  },
  "luminance": 0.07323
}

Semantic roles & 50–950 ramp

primary

#1F4998

secondary

#C09A53

accent

#AE3FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4998

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

Preview Lab → · Contrast checker → · Palette generator →