#1F439A#1F439A

#1F439A is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.2% C 0.148 H 264.0°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F439A
RGB	rgb(31, 67, 154)
HSL	hsl(222, 66%, 36%)
HSV	hsv(222, 80%, 60%)
CMYK	cmyk(79.9%, 56.5%, 0%, 39.6%)
CIE-LAB	lab(30.97, 20.30, -51.16)
CIE-LCH	lch(30.97, 55.04, 291.64°)
OKLab	oklab(41.22% -0.0155 -0.1476)
OKLCH	oklch(41.22% 0.148 264)
XYZ	xyz(8.4029, 6.6377, 31.4039)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F439A #9A761F

analogous

#1F819A #1F439A #391F9A

triadic

#1F439A #9A1F43 #439A1F

tetradic

#1F439A #9A1F81 #9A761F #1F9A39

square

#1F439A #9A1F81 #9A761F #1F9A39

split-complementary

#1F439A #9A391F #819A1F

monochromatic

#0A1734 #152D67 #1F439A #2959CD #567EDD

Accessibility & contrast

On white

9.02

#1F439A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F439A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F439A

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F439A	#FFFFFF	#000000	##FFFFFF
##1F439A	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9D

Deuteranopia (green-blind)

#004398

Tritanopia (blue-blind)

#005968

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f439a;
/* rgb */ color: rgb(31, 67, 154);
/* oklch */ color: oklch(41.2% 0.148 264.0);

Tailwind

colors: {
  custom: {
    50: '#6f76b8',
    500: '#1f439a',
    950: '#000000',
  },
}

SCSS

$custom: #1f439a;
$custom-light: #6f76b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f439a",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 154
  },
  "hsl": {
    "h": 222.439,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41217,
    "c": 0.14845,
    "h": 264
  },
  "luminance": 0.06639
}

Semantic roles & 50–950 ramp

primary

#1F439A

secondary

#C1A154

accent

#B73EE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F439A

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

Preview Lab → · Contrast checker → · Palette generator →