#1F4C98#1F4C98

#1F4C98 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.0% C 0.134 H 260.3°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F4C98
RGB	rgb(31, 76, 152)
HSL	hsl(218, 66%, 36%)
HSV	hsv(218, 80%, 60%)
CMYK	cmyk(79.6%, 50%, 0%, 40.4%)
CIE-LAB	lab(33.41, 13.37, -46.00)
CIE-LCH	lch(33.41, 47.90, 286.20°)
OKLab	oklab(43.03% -0.0227 -0.1323)
OKLCH	oklch(43.03% 0.134 260.3)
XYZ	xyz(8.8150, 7.7262, 30.7264)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4C98 #986B1F

analogous

#1F8898 #1F4C98 #2E1F98

triadic

#1F4C98 #981F4C #4C981F

tetradic

#1F4C98 #981F88 #986B1F #1F982E

square

#1F4C98 #981F88 #986B1F #1F982E

split-complementary

#1F4C98 #982E1F #88981F

monochromatic

#0A1932 #153365 #1F4C98 #2965CB #5587DC

Accessibility & contrast

On white

8.25

#1F4C98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1F4C98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4C98

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4C98	#FFFFFF	#000000	##FFFFFF
##1F4C98	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F549B

Deuteranopia (green-blind)

#004996

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4c98;
/* rgb */ color: rgb(31, 76, 152);
/* oklch */ color: oklch(43.0% 0.134 260.3);

Tailwind

colors: {
  custom: {
    50: '#6e7db7',
    500: '#1f4c98',
    950: '#000000',
  },
}

SCSS

$custom: #1f4c98;
$custom-light: #6e7db7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4c98",
  "rgb": {
    "r": 31,
    "g": 76,
    "b": 152
  },
  "hsl": {
    "h": 217.686,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.43025,
    "c": 0.1342,
    "h": 260.3
  },
  "luminance": 0.07727
}

Semantic roles & 50–950 ramp

primary

#1F4C98

secondary

#C09753

accent

#AA3FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4C98

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

Preview Lab → · Contrast checker → · Palette generator →