#1F4398#1F4398

#1F4398 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.0% C 0.146 H 263.8°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F4398
RGB	rgb(31, 67, 152)
HSL	hsl(222, 66%, 36%)
HSV	hsv(222, 80%, 60%)
CMYK	cmyk(79.6%, 55.9%, 0%, 40.4%)
CIE-LAB	lab(30.81, 19.50, -50.20)
CIE-LCH	lch(30.81, 53.85, 291.23°)
OKLab	oklab(41.05% -0.0157 -0.1448)
OKLCH	oklch(41.05% 0.146 263.8)
XYZ	xyz(8.2377, 6.5717, 30.5340)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4398 #98741F

analogous

#1F7F98 #1F4398 #381F98

triadic

#1F4398 #981F43 #43981F

tetradic

#1F4398 #981F7F #98741F #1F9838

square

#1F4398 #981F7F #98741F #1F9838

split-complementary

#1F4398 #98381F #7F981F

monochromatic

#0A1632 #152D65 #1F4398 #2959CB #557DDC

Accessibility & contrast

On white

9.07

#1F4398 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1F4398 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4398

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4398	#FFFFFF	#000000	##FFFFFF
##1F4398	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9B

Deuteranopia (green-blind)

#004396

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4398;
/* rgb */ color: rgb(31, 67, 152);
/* oklch */ color: oklch(41.0% 0.146 263.8);

Tailwind

colors: {
  custom: {
    50: '#6f76b7',
    500: '#1f4398',
    950: '#000000',
  },
}

SCSS

$custom: #1f4398;
$custom-light: #6f76b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4398",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 152
  },
  "hsl": {
    "h": 222.149,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.4105,
    "c": 0.14565,
    "h": 263.8
  },
  "luminance": 0.06573
}

Semantic roles & 50–950 ramp

primary

#1F4398

secondary

#C09F53

accent

#B63FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4398

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

Preview Lab → · Contrast checker → · Palette generator →