#1F4298#1F4298

#1F4298 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.8% C 0.147 H 264.2°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#1F4298
RGB	rgb(31, 66, 152)
HSL	hsl(223, 66%, 36%)
HSV	hsv(223, 80%, 60%)
CMYK	cmyk(79.6%, 56.6%, 0%, 40.4%)
CIE-LAB	lab(30.53, 20.18, -50.66)
CIE-LCH	lch(30.53, 54.53, 291.72°)
OKLab	oklab(40.84% -0.015 -0.1462)
OKLCH	oklch(40.84% 0.147 264.2)
XYZ	xyz(8.1788, 6.4538, 30.5143)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4298 #98751F

analogous

#1F7E98 #1F4298 #391F98

triadic

#1F4298 #981F42 #42981F

tetradic

#1F4298 #981F7E #98751F #1F9839

square

#1F4298 #981F7E #98751F #1F9839

split-complementary

#1F4298 #98391F #7E981F

monochromatic

#0A1632 #152C65 #1F4298 #2958CB #557CDC

Accessibility & contrast

On white

9.17

#1F4298 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1F4298 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4298

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4298	#FFFFFF	#000000	##FFFFFF
##1F4298	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9B

Deuteranopia (green-blind)

#004396

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4298;
/* rgb */ color: rgb(31, 66, 152);
/* oklch */ color: oklch(40.8% 0.147 264.2);

Tailwind

colors: {
  custom: {
    50: '#6f75b7',
    500: '#1f4298',
    950: '#000000',
  },
}

SCSS

$custom: #1f4298;
$custom-light: #6f75b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4298",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 152
  },
  "hsl": {
    "h": 222.645,
    "s": 66.12,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40837,
    "c": 0.14693,
    "h": 264.2
  },
  "luminance": 0.06455
}

Semantic roles & 50–950 ramp

primary

#1F4298

secondary

#C0A053

accent

#B83FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4298

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

Preview Lab → · Contrast checker → · Palette generator →