#1A178C#1A178C

#1A178C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.180 H 270.9°. Best body text is #FFFFFF at 13.59:1 contrast (WCAG AA passes).

Color values

HEX	#1A178C
RGB	rgb(26, 23, 140)
HSL	hsl(242, 72%, 32%)
HSV	hsv(242, 84%, 55%)
CMYK	cmyk(81.4%, 83.6%, 0%, 45.1%)
CIE-LAB	lab(18.91, 42.51, -62.35)
CIE-LCH	lch(18.91, 75.47, 304.29°)
OKLab	oklab(31.95% 0.0027 -0.1805)
OKLCH	oklch(31.95% 0.181 270.9)
XYZ	xyz(5.4644, 2.7252, 25.0439)
Luminance	0.0273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A178C #898C17

analogous

#174F8C #1A178C #54178C

triadic

#1A178C #8C1A17 #178C1A

tetradic

#1A178C #8C174F #898C17 #178C54

square

#1A178C #8C174F #898C17 #178C54

split-complementary

#1A178C #8C5417 #4F8C17

monochromatic

#060623 #100E57 #1A178C #2420C1 #423EDF

Accessibility & contrast

On white

13.59

#1A178C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1A178C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A178C

13.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A178C	#FFFFFF	#000000	##FFFFFF
##1A178C	1.00	13.59	1.55	13.59
#FFFFFF	13.59	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348F

Deuteranopia (green-blind)

#00288A

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1a178c;
/* rgb */ color: rgb(26, 23, 140);
/* oklch */ color: oklch(32.0% 0.180 270.9);

Tailwind

colors: {
  custom: {
    50: '#6e58af',
    500: '#1a178c',
    950: '#000000',
  },
}

SCSS

$custom: #1a178c;
$custom-light: #6e58af;
$custom-dark: #000000;

JSON

{
  "hex": "#1a178c",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 140
  },
  "hsl": {
    "h": 241.538,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.31953,
    "c": 0.1805,
    "h": 270.9
  },
  "luminance": 0.02726
}

Semantic roles & 50–950 ramp

primary

#1A178C

secondary

#BCBF3F

accent

#EF39EA

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A178C

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

Preview Lab → · Contrast checker → · Palette generator →