#1F459A#1F459A

#1F459A is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.6% C 0.146 H 263.3°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F459A
RGB	rgb(31, 69, 154)
HSL	hsl(221, 66%, 36%)
HSV	hsv(221, 80%, 60%)
CMYK	cmyk(79.9%, 55.2%, 0%, 39.6%)
CIE-LAB	lab(31.53, 18.93, -50.25)
CIE-LCH	lch(31.53, 53.69, 290.64°)
OKLab	oklab(41.64% -0.017 -0.1449)
OKLCH	oklch(41.64% 0.146 263.3)
XYZ	xyz(8.5238, 6.8797, 31.4442)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F459A #9A741F

analogous

#1F839A #1F459A #371F9A

triadic

#1F459A #9A1F45 #459A1F

tetradic

#1F459A #9A1F83 #9A741F #1F9A37

square

#1F459A #9A1F83 #9A741F #1F9A37

split-complementary

#1F459A #9A371F #839A1F

monochromatic

#0A1734 #152E67 #1F459A #295CCD #5680DD

Accessibility & contrast

On white

8.84

#1F459A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1F459A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F459A

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F459A	#FFFFFF	#000000	##FFFFFF
##1F459A	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509D

Deuteranopia (green-blind)

#004598

Tritanopia (blue-blind)

#005A68

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f459a;
/* rgb */ color: rgb(31, 69, 154);
/* oklch */ color: oklch(41.6% 0.146 263.3);

Tailwind

colors: {
  custom: {
    50: '#6f78b8',
    500: '#1f459a',
    950: '#000000',
  },
}

SCSS

$custom: #1f459a;
$custom-light: #6f78b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f459a",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 154
  },
  "hsl": {
    "h": 221.463,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41643,
    "c": 0.14589,
    "h": 263.3
  },
  "luminance": 0.06881
}

Semantic roles & 50–950 ramp

primary

#1F459A

secondary

#C19F54

accent

#B53EE9

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F459A

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

Preview Lab → · Contrast checker → · Palette generator →