#1A1F77#1A1F77

#1A1F77 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.6% C 0.146 H 271.5°. Best body text is #FFFFFF at 13.94:1 contrast (WCAG AA passes).

Color values

HEX	#1A1F77
RGB	rgb(26, 31, 119)
HSL	hsl(237, 64%, 28%)
HSV	hsv(237, 78%, 47%)
CMYK	cmyk(78.2%, 73.9%, 0%, 53.3%)
CIE-LAB	lab(18.06, 30.59, -50.46)
CIE-LCH	lch(18.06, 59.01, 301.23°)
OKLab	oklab(30.63% 0.0038 -0.146)
OKLCH	oklch(30.63% 0.146 271.5)
XYZ	xyz(4.2446, 2.5310, 17.7140)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A1F77 #77721A

analogous

#1A4D77 #1A1F77 #431A77

triadic

#1A1F77 #771A1F #1F771A

tetradic

#1A1F77 #771A4D #77721A #1A7743

square

#1A1F77 #771A4D #77721A #1A7743

split-complementary

#1A1F77 #77431A #4D771A

monochromatic

#050719 #0F1245 #1A1F77 #252CA9 #3840D3

Accessibility & contrast

On white

13.94

#1A1F77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1A1F77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A1F77

13.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A1F77	#FFFFFF	#000000	##FFFFFF
##1A1F77	1.00	13.94	1.51	13.94
#FFFFFF	13.94	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317A

Deuteranopia (green-blind)

#002875

Tritanopia (blue-blind)

#003848

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1a1f77;
/* rgb */ color: rgb(26, 31, 119);
/* oklch */ color: oklch(30.6% 0.146 271.5);

Tailwind

colors: {
  custom: {
    50: '#675b9f',
    500: '#1a1f77',
    950: '#000000',
  },
}

SCSS

$custom: #1a1f77;
$custom-light: #675b9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1a1f77",
  "rgb": {
    "r": 26,
    "g": 31,
    "b": 119
  },
  "hsl": {
    "h": 236.774,
    "s": 64.138,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30632,
    "c": 0.14609,
    "h": 271.5
  },
  "luminance": 0.02531
}

Semantic roles & 50–950 ramp

primary

#1A1F77

secondary

#ACA641

accent

#DE41E7

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1A1F77

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

Preview Lab → · Contrast checker → · Palette generator →