#1F4997#1F4997

#1F4997 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.3% C 0.137 H 261.4°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F4997
RGB	rgb(31, 73, 151)
HSL	hsl(219, 66%, 36%)
HSV	hsv(219, 79%, 59%)
CMYK	cmyk(79.5%, 51.7%, 0%, 40.8%)
CIE-LAB	lab(32.46, 15.00, -46.93)
CIE-LCH	lch(32.46, 49.26, 287.73°)
OKLab	oklab(42.28% -0.0204 -0.135)
OKLCH	oklch(42.28% 0.137 261.4)
XYZ	xyz(8.5315, 7.2898, 30.2296)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4997 #976D1F

analogous

#1F8597 #1F4997 #311F97

triadic

#1F4997 #971F49 #49971F

tetradic

#1F4997 #971F85 #976D1F #1F9731

square

#1F4997 #971F85 #976D1F #1F9731

split-complementary

#1F4997 #97311F #85971F

monochromatic

#0A1831 #153064 #1F4997 #2962CA #5484DC

Accessibility & contrast

On white

8.54

#1F4997 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1F4997 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4997

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4997	#FFFFFF	#000000	##FFFFFF
##1F4997	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17529A

Deuteranopia (green-blind)

#004795

Tritanopia (blue-blind)

#005C69

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4997;
/* rgb */ color: rgb(31, 73, 151);
/* oklch */ color: oklch(42.3% 0.137 261.4);

Tailwind

colors: {
  custom: {
    50: '#6e7bb6',
    500: '#1f4997',
    950: '#000000',
  },
}

SCSS

$custom: #1f4997;
$custom-light: #6e7bb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4997",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 151
  },
  "hsl": {
    "h": 219,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42277,
    "c": 0.13659,
    "h": 261.4
  },
  "luminance": 0.07291
}

Semantic roles & 50–950 ramp

primary

#1F4997

secondary

#BF9952

accent

#AD3FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1F4997

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

Preview Lab → · Contrast checker → · Palette generator →