#1F4E98#1F4E98

#1F4E98 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.5% C 0.132 H 259.3°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E98
RGB	rgb(31, 78, 152)
HSL	hsl(217, 66%, 36%)
HSV	hsv(217, 80%, 60%)
CMYK	cmyk(79.6%, 48.7%, 0%, 40.4%)
CIE-LAB	lab(34.00, 12.02, -45.05)
CIE-LCH	lch(34.00, 46.63, 284.94°)
OKLab	oklab(43.48% -0.0243 -0.1294)
OKLCH	oklch(43.48% 0.132 259.3)
XYZ	xyz(8.9549, 8.0060, 30.7730)
Luminance	0.0801 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E98 #98691F

analogous

#1F8A98 #1F4E98 #2C1F98

triadic

#1F4E98 #981F4E #4E981F

tetradic

#1F4E98 #981F8A #98691F #1F982C

square

#1F4E98 #981F8A #98691F #1F982C

split-complementary

#1F4E98 #982C1F #8A981F

monochromatic

#0A1A32 #153465 #1F4E98 #2968CB #558ADC

Accessibility & contrast

On white

8.07

#1F4E98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#1F4E98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E98

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E98	#FFFFFF	#000000	##FFFFFF
##1F4E98	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24569B

Deuteranopia (green-blind)

#004B97

Tritanopia (blue-blind)

#00606B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f4e98;
/* rgb */ color: rgb(31, 78, 152);
/* oklch */ color: oklch(43.5% 0.132 259.3);

Tailwind

colors: {
  custom: {
    50: '#6e7fb7',
    500: '#1f4e98',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e98;
$custom-light: #6e7fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e98",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 152
  },
  "hsl": {
    "h": 216.694,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.43478,
    "c": 0.13171,
    "h": 259.3
  },
  "luminance": 0.08007
}

Semantic roles & 50–950 ramp

primary

#1F4E98

secondary

#C09653

accent

#A73FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1F4E98

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

Preview Lab → · Contrast checker → · Palette generator →