#1A178F#1A178F

#1A178F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.184 H 270.6°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#1A178F
RGB	rgb(26, 23, 143)
HSL	hsl(242, 72%, 33%)
HSV	hsv(242, 84%, 56%)
CMYK	cmyk(81.8%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(19.29, 43.48, -63.60)
CIE-LCH	lch(19.29, 77.04, 304.36°)
OKLab	oklab(32.32% 0.002 -0.1841)
OKLCH	oklch(32.32% 0.184 270.6)
XYZ	xyz(5.6886, 2.8149, 26.2248)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A178F #8C8F17

analogous

#17508F #1A178F #56178F

triadic

#1A178F #8F1A17 #178F1A

tetradic

#1A178F #8F1750 #8C8F17 #178F56

square

#1A178F #8F1750 #8C8F17 #178F56

split-complementary

#1A178F #8F5617 #508F17

monochromatic

#070626 #100F5A #1A178F #241FC4 #4440E0

Accessibility & contrast

On white

13.43

#1A178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1A178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A178F

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A178F	#FFFFFF	#000000	##FFFFFF
##1A178F	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1a178f;
/* rgb */ color: rgb(26, 23, 143);
/* oklch */ color: oklch(32.3% 0.184 270.6);

Tailwind

colors: {
  custom: {
    50: '#6f58b1',
    500: '#1a178f',
    950: '#000000',
  },
}

SCSS

$custom: #1a178f;
$custom-light: #6f58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1a178f",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 241.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32324,
    "c": 0.18409,
    "h": 270.6
  },
  "luminance": 0.02816
}

Semantic roles & 50–950 ramp

primary

#1A178F

secondary

#BEC141

accent

#EF39EA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A178F

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

Preview Lab → · Contrast checker → · Palette generator →