#1A1B59#1A1B59

#1A1B59 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.109 H 275.5°. Best body text is #FFFFFF at 15.61:1 contrast (WCAG AA passes).

Color values

HEX	#1A1B59
RGB	rgb(26, 27, 89)
HSL	hsl(239, 55%, 23%)
HSV	hsv(239, 71%, 35%)
CMYK	cmyk(70.8%, 69.7%, 0%, 65.1%)
CIE-LAB	lab(13.97, 21.87, -37.48)
CIE-LCH	lch(13.97, 43.39, 300.26°)
OKLab	oklab(26.73% 0.0104 -0.1081)
OKLCH	oklch(26.73% 0.109 275.5)
XYZ	xyz(2.6205, 1.7245, 9.6440)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A1B59 #59581A

analogous

#1A3A59 #1A1B59 #391A59

triadic

#1A1B59 #591A1B #1B591A

tetradic

#1A1B59 #591A3A #59581A #1A5939

square

#1A1B59 #591A3A #59581A #1A5939

split-complementary

#1A1B59 #59391A #3A591A

monochromatic

#070718 #0C0D2A #1A1B59 #282988 #3638B8

Accessibility & contrast

On white

15.61

#1A1B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#1A1B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A1B59

15.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A1B59	#FFFFFF	#000000	##FFFFFF
##1A1B59	1.00	15.61	1.35	15.61
#FFFFFF	15.61	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265B

Deuteranopia (green-blind)

#002158

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1a1b59;
/* rgb */ color: rgb(26, 27, 89);
/* oklch */ color: oklch(26.7% 0.109 275.5);

Tailwind

colors: {
  custom: {
    50: '#605789',
    500: '#1a1b59',
    950: '#000000',
  },
}

SCSS

$custom: #1a1b59;
$custom-light: #605789;
$custom-dark: #000000;

JSON

{
  "hex": "#1a1b59",
  "rgb": {
    "r": 26,
    "g": 27,
    "b": 89
  },
  "hsl": {
    "h": 239.048,
    "s": 54.783,
    "l": 22.549
  },
  "oklch": {
    "l": 0.26734,
    "c": 0.1086,
    "h": 275.5
  },
  "luminance": 0.01725
}

Semantic roles & 50–950 ramp

primary

#1A1B59

secondary

#8F8E40

accent

#DC4ADE

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #1A1B59

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

Preview Lab → · Contrast checker → · Palette generator →