#1F4497#1F4497

#1F4497 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.2% C 0.143 H 263.4°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F4497
RGB	rgb(31, 68, 151)
HSL	hsl(222, 66%, 36%)
HSV	hsv(222, 79%, 59%)
CMYK	cmyk(79.5%, 55%, 0%, 40.8%)
CIE-LAB	lab(31.02, 18.42, -49.26)
CIE-LCH	lch(31.02, 52.59, 290.50°)
OKLab	oklab(41.18% -0.0165 -0.142)
OKLCH	oklch(41.18% 0.143 263.4)
XYZ	xyz(8.2161, 6.6590, 30.1244)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4497 #97721F

analogous

#1F8097 #1F4497 #361F97

triadic

#1F4497 #971F44 #44971F

tetradic

#1F4497 #971F80 #97721F #1F9736

square

#1F4497 #971F80 #97721F #1F9736

split-complementary

#1F4497 #97361F #80971F

monochromatic

#0A1631 #152D64 #1F4497 #295BCA #547EDC

Accessibility & contrast

On white

9.01

#1F4497 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F4497 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4497

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4497	#FFFFFF	#000000	##FFFFFF
##1F4497	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9A

Deuteranopia (green-blind)

#004495

Tritanopia (blue-blind)

#005866

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4497;
/* rgb */ color: rgb(31, 68, 151);
/* oklch */ color: oklch(41.2% 0.143 263.4);

Tailwind

colors: {
  custom: {
    50: '#6e77b6',
    500: '#1f4497',
    950: '#000000',
  },
}

SCSS

$custom: #1f4497;
$custom-light: #6e77b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4497",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 151
  },
  "hsl": {
    "h": 221.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.41181,
    "c": 0.14297,
    "h": 263.4
  },
  "luminance": 0.0666
}

Semantic roles & 50–950 ramp

primary

#1F4497

secondary

#BF9E52

accent

#B43FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4497

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

Preview Lab → · Contrast checker → · Palette generator →