#1F4A98#1F4A98

#1F4A98 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.6% C 0.137 H 261.1°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F4A98
RGB	rgb(31, 74, 152)
HSL	hsl(219, 66%, 36%)
HSV	hsv(219, 80%, 60%)
CMYK	cmyk(79.6%, 51.3%, 0%, 40.4%)
CIE-LAB	lab(32.82, 14.72, -46.95)
CIE-LCH	lch(32.82, 49.20, 287.41°)
OKLab	oklab(42.58% -0.0211 -0.1351)
OKLCH	oklch(42.58% 0.137 261.1)
XYZ	xyz(8.6793, 7.4549, 30.6812)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4A98 #986D1F

analogous

#1F8698 #1F4A98 #311F98

triadic

#1F4A98 #981F4A #4A981F

tetradic

#1F4A98 #981F86 #986D1F #1F9831

square

#1F4A98 #981F86 #986D1F #1F9831

split-complementary

#1F4A98 #98311F #86981F

monochromatic

#0A1932 #153165 #1F4A98 #2963CB #5585DC

Accessibility & contrast

On white

8.43

#1F4A98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1F4A98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4A98

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4A98	#FFFFFF	#000000	##FFFFFF
##1F4A98	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19539B

Deuteranopia (green-blind)

#004896

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4a98;
/* rgb */ color: rgb(31, 74, 152);
/* oklch */ color: oklch(42.6% 0.137 261.1);

Tailwind

colors: {
  custom: {
    50: '#6e7bb7',
    500: '#1f4a98',
    950: '#000000',
  },
}

SCSS

$custom: #1f4a98;
$custom-light: #6e7bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4a98",
  "rgb": {
    "r": 31,
    "g": 74,
    "b": 152
  },
  "hsl": {
    "h": 218.678,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42577,
    "c": 0.13673,
    "h": 261.1
  },
  "luminance": 0.07456
}

Semantic roles & 50–950 ramp

primary

#1F4A98

secondary

#C09953

accent

#AD3FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4A98

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

Preview Lab → · Contrast checker → · Palette generator →