#1A1F78#1A1F78

#1A1F78 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.7% C 0.147 H 271.4°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#1A1F78
RGB	rgb(26, 31, 120)
HSL	hsl(237, 64%, 29%)
HSV	hsv(237, 78%, 47%)
CMYK	cmyk(78.3%, 74.2%, 0%, 52.9%)
CIE-LAB	lab(18.17, 30.96, -50.92)
CIE-LCH	lch(18.17, 59.60, 301.30°)
OKLab	oklab(30.74% 0.0037 -0.1474)
OKLCH	oklch(30.74% 0.147 271.4)
XYZ	xyz(4.3050, 2.5552, 18.0320)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A1F78 #78731A

analogous

#1A4E78 #1A1F78 #441A78

triadic

#1A1F78 #781A1F #1F781A

tetradic

#1A1F78 #781A4E #78731A #1A7844

square

#1A1F78 #781A4E #78731A #1A7844

split-complementary

#1A1F78 #78441A #4E781A

monochromatic

#050619 #0F1246 #1A1F78 #252CAA #3841D4

Accessibility & contrast

On white

13.90

#1A1F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1A1F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A1F78

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A1F78	#FFFFFF	#000000	##FFFFFF
##1A1F78	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317B

Deuteranopia (green-blind)

#002876

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1a1f78;
/* rgb */ color: rgb(26, 31, 120);
/* oklch */ color: oklch(30.7% 0.147 271.4);

Tailwind

colors: {
  custom: {
    50: '#685ba0',
    500: '#1a1f78',
    950: '#000000',
  },
}

SCSS

$custom: #1a1f78;
$custom-light: #685ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a1f78",
  "rgb": {
    "r": 26,
    "g": 31,
    "b": 120
  },
  "hsl": {
    "h": 236.809,
    "s": 64.384,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30742,
    "c": 0.14744,
    "h": 271.4
  },
  "luminance": 0.02556
}

Semantic roles & 50–950 ramp

primary

#1A1F78

secondary

#ACA741

accent

#DF40E7

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1A1F78

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

Preview Lab → · Contrast checker → · Palette generator →