#1A178D#1A178D

#1A178D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.182 H 270.8°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#1A178D
RGB	rgb(26, 23, 141)
HSL	hsl(242, 72%, 32%)
HSV	hsv(242, 84%, 55%)
CMYK	cmyk(81.6%, 83.7%, 0%, 44.7%)
CIE-LAB	lab(19.03, 42.84, -62.77)
CIE-LCH	lch(19.03, 75.99, 304.31°)
OKLab	oklab(32.08% 0.0025 -0.1817)
OKLCH	oklch(32.08% 0.182 270.8)
XYZ	xyz(5.5385, 2.7549, 25.4340)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A178D #8A8D17

analogous

#174F8D #1A178D #55178D

triadic

#1A178D #8D1A17 #178D1A

tetradic

#1A178D #8D174F #8A8D17 #178D55

square

#1A178D #8D174F #8A8D17 #178D55

split-complementary

#1A178D #8D5517 #4F8D17

monochromatic

#070624 #100E58 #1A178D #2420C2 #433FE0

Accessibility & contrast

On white

13.54

#1A178D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1A178D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A178D

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A178D	#FFFFFF	#000000	##FFFFFF
##1A178D	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1a178d;
/* rgb */ color: rgb(26, 23, 141);
/* oklch */ color: oklch(32.1% 0.182 270.8);

Tailwind

colors: {
  custom: {
    50: '#6e58b0',
    500: '#1a178d',
    950: '#000000',
  },
}

SCSS

$custom: #1a178d;
$custom-light: #6e58b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a178d",
  "rgb": {
    "r": 26,
    "g": 23,
    "b": 141
  },
  "hsl": {
    "h": 241.525,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32076,
    "c": 0.18171,
    "h": 270.8
  },
  "luminance": 0.02755
}

Semantic roles & 50–950 ramp

primary

#1A178D

secondary

#BDC040

accent

#EF39EA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A178D

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

Preview Lab → · Contrast checker → · Palette generator →