#1A287B#1A287B

#1A287B is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.141 H 269.2°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#1A287B
RGB	rgb(26, 40, 123)
HSL	hsl(231, 65%, 29%)
HSV	hsv(231, 79%, 48%)
CMYK	cmyk(78.9%, 67.5%, 0%, 51.8%)
CIE-LAB	lab(20.70, 26.10, -48.67)
CIE-LCH	lch(20.70, 55.23, 298.20°)
OKLab	oklab(32.67% -0.0019 -0.1408)
OKLCH	oklch(32.67% 0.141 269.2)
XYZ	xyz(4.7587, 3.1667, 19.0955)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A287B #7B6D1A

analogous

#1A597B #1A287B #3D1A7B

triadic

#1A287B #7B1A28 #287B1A

tetradic

#1A287B #7B1A59 #7B6D1A #1A7B3D

square

#1A287B #7B1A59 #7B6D1A #1A7B3D

split-complementary

#1A287B #7B3D1A #597B1A

monochromatic

#050819 #0F1848 #1A287B #2538AE #3A50D5

Accessibility & contrast

On white

12.86

#1A287B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1A287B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A287B

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A287B	#FFFFFF	#000000	##FFFFFF
##1A287B	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367E

Deuteranopia (green-blind)

#002D79

Tritanopia (blue-blind)

#003E4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1a287b;
/* rgb */ color: rgb(26, 40, 123);
/* oklch */ color: oklch(32.7% 0.141 269.2);

Tailwind

colors: {
  custom: {
    50: '#6862a2',
    500: '#1a287b',
    950: '#000000',
  },
}

SCSS

$custom: #1a287b;
$custom-light: #6862a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a287b",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 123
  },
  "hsl": {
    "h": 231.34,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32673,
    "c": 0.14081,
    "h": 269.2
  },
  "luminance": 0.03167
}

Semantic roles & 50–950 ramp

primary

#1A287B

secondary

#AF9F42

accent

#D040E8

background

#F6F5FA

surface

#EBEAF4

border

#C6C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A287B

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

Preview Lab → · Contrast checker → · Palette generator →