#1F4099#1F4099

#1F4099 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.5% C 0.151 H 264.9°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F4099
RGB	rgb(31, 64, 153)
HSL	hsl(224, 66%, 36%)
HSV	hsv(224, 80%, 60%)
CMYK	cmyk(79.7%, 58.2%, 0%, 40%)
CIE-LAB	lab(30.05, 21.95, -52.04)
CIE-LCH	lch(30.05, 56.48, 292.87°)
OKLab	oklab(40.5% -0.0135 -0.1503)
OKLCH	oklch(40.5% 0.151 264.9)
XYZ	xyz(8.1462, 6.2571, 30.9092)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4099 #99781F

analogous

#1F7D99 #1F4099 #3B1F99

triadic

#1F4099 #991F40 #40991F

tetradic

#1F4099 #991F7D #99781F #1F993B

square

#1F4099 #991F7D #99781F #1F993B

split-complementary

#1F4099 #993B1F #7D991F

monochromatic

#0A1533 #152B66 #1F4099 #2955CC #567ADD

Accessibility & contrast

On white

9.33

#1F4099 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F4099 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4099

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4099	#FFFFFF	#000000	##FFFFFF
##1F4099	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004197

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f4099;
/* rgb */ color: rgb(31, 64, 153);
/* oklch */ color: oklch(40.5% 0.151 264.9);

Tailwind

colors: {
  custom: {
    50: '#6f74b8',
    500: '#1f4099',
    950: '#000000',
  },
}

SCSS

$custom: #1f4099;
$custom-light: #6f74b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4099",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 153
  },
  "hsl": {
    "h": 223.77,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40502,
    "c": 0.15087,
    "h": 264.9
  },
  "luminance": 0.06258
}

Semantic roles & 50–950 ramp

primary

#1F4099

secondary

#C0A354

accent

#BB3FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F4099

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

Preview Lab → · Contrast checker → · Palette generator →