#1F4297#1F4297

#1F4297 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.8% C 0.146 H 264.1°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F4297
RGB	rgb(31, 66, 151)
HSL	hsl(223, 66%, 36%)
HSV	hsv(223, 79%, 59%)
CMYK	cmyk(79.5%, 56.3%, 0%, 40.8%)
CIE-LAB	lab(30.45, 19.79, -50.18)
CIE-LCH	lch(30.45, 53.94, 291.52°)
OKLab	oklab(40.75% -0.015 -0.1447)
OKLCH	oklch(40.75% 0.146 264.1)
XYZ	xyz(8.0972, 6.4212, 30.0848)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4297 #97741F

analogous

#1F7E97 #1F4297 #381F97

triadic

#1F4297 #971F42 #42971F

tetradic

#1F4297 #971F7E #97741F #1F9738

square

#1F4297 #971F7E #97741F #1F9738

split-complementary

#1F4297 #97381F #7E971F

monochromatic

#0A1631 #152C64 #1F4297 #2958CA #547CDC

Accessibility & contrast

On white

9.19

#1F4297 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1F4297 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4297

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4297	#FFFFFF	#000000	##FFFFFF
##1F4297	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9A

Deuteranopia (green-blind)

#004295

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f4297;
/* rgb */ color: rgb(31, 66, 151);
/* oklch */ color: oklch(40.8% 0.146 264.1);

Tailwind

colors: {
  custom: {
    50: '#6e75b6',
    500: '#1f4297',
    950: '#000000',
  },
}

SCSS

$custom: #1f4297;
$custom-light: #6e75b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4297",
  "rgb": {
    "r": 31,
    "g": 66,
    "b": 151
  },
  "hsl": {
    "h": 222.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40753,
    "c": 0.14553,
    "h": 264.1
  },
  "luminance": 0.06422
}

Semantic roles & 50–950 ramp

primary

#1F4297

secondary

#BFA052

accent

#B73FE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1F4297

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

Preview Lab → · Contrast checker → · Palette generator →