#1A178A#1A178A

#1A178A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.178 H 271.0°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#1A178A
RGB	rgb(26, 23, 138)
HSL	hsl(242, 71%, 32%)
HSV	hsv(242, 83%, 54%)
CMYK	cmyk(81.2%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(18.66, 41.86, -61.52)
CIE-LCH	lch(18.66, 74.41, 304.23°)
OKLab	oklab(31.71% 0.0032 -0.1781)
OKLCH	oklch(31.71% 0.178 271)
XYZ	xyz(5.3183, 2.6668, 24.2743)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A178A #878A17

analogous

#174E8A #1A178A #54178A

triadic

#1A178A #8A1A17 #178A1A

tetradic

#1A178A #8A174E #878A17 #178A54

square

#1A178A #8A174E #878A17 #178A54

split-complementary

#1A178A #8A5417 #4E8A17

monochromatic

#060621 #100E56 #1A178A #2420BE #413DDF

Accessibility & contrast

On white

13.70

#1A178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1A178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A178A

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A178A	#FFFFFF	#000000	##FFFFFF
##1A178A	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002788

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1a178a;
/* rgb */ color: rgb(26, 23, 138);
/* oklch */ color: oklch(31.7% 0.178 271.0);

Tailwind

colors: {
  custom: {
    50: '#6d57ad',
    500: '#1a178a',
    950: '#000000',
  },
}

SCSS

$custom: #1a178a;
$custom-light: #6d57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a178a",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 241.565,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31706,
    "c": 0.1781,
    "h": 271
  },
  "luminance": 0.02667
}

Semantic roles & 50–950 ramp

primary

#1A178A

secondary

#BABE3F

accent

#EE3AE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1A178A

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

Preview Lab → · Contrast checker → · Palette generator →