#1A188F#1A188F

#1A188F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.183 H 270.6°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#1A188F
RGB	rgb(26, 24, 143)
HSL	hsl(241, 71%, 33%)
HSV	hsv(241, 83%, 56%)
CMYK	cmyk(81.8%, 83.2%, 0%, 43.9%)
CIE-LAB	lab(19.46, 42.99, -63.32)
CIE-LCH	lch(19.46, 76.53, 304.17°)
OKLab	oklab(32.44% 0.0018 -0.1833)
OKLCH	oklch(32.44% 0.183 270.6)
XYZ	xyz(5.7089, 2.8554, 26.2315)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A188F #8D8F18

analogous

#18528F #1A188F #55188F

triadic

#1A188F #8F1A18 #188F1A

tetradic

#1A188F #8F1852 #8D8F18 #188F55

square

#1A188F #8F1852 #8D8F18 #188F55

split-complementary

#1A188F #8F5518 #528F18

monochromatic

#070626 #100F5B #1A188F #2421C3 #4542DF

Accessibility & contrast

On white

13.37

#1A188F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1A188F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A188F

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A188F	#FFFFFF	#000000	##FFFFFF
##1A188F	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00298D

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1a188f;
/* rgb */ color: rgb(26, 24, 143);
/* oklch */ color: oklch(32.4% 0.183 270.6);

Tailwind

colors: {
  custom: {
    50: '#6f58b1',
    500: '#1a188f',
    950: '#000000',
  },
}

SCSS

$custom: #1a188f;
$custom-light: #6f58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1a188f",
  "rgb": {
    "r": 26,
    "g": 24,
    "b": 143
  },
  "hsl": {
    "h": 241.008,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32441,
    "c": 0.1833,
    "h": 270.6
  },
  "luminance": 0.02856
}

Semantic roles & 50–950 ramp

primary

#1A188F

secondary

#BEC043

accent

#EE3AEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1A188F

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

Preview Lab → · Contrast checker → · Palette generator →