#1A287C#1A287C

#1A287C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.142 H 269.2°. Best body text is #FFFFFF at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#1A287C
RGB	rgb(26, 40, 124)
HSL	hsl(231, 65%, 29%)
HSV	hsv(231, 79%, 49%)
CMYK	cmyk(79%, 67.7%, 0%, 51.4%)
CIE-LAB	lab(20.80, 26.49, -49.15)
CIE-LCH	lch(20.80, 55.83, 298.32°)
OKLab	oklab(32.77% -0.0019 -0.1422)
OKLCH	oklch(32.77% 0.142 269.2)
XYZ	xyz(4.8216, 3.1919, 19.4269)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A287C #7C6E1A

analogous

#1A597C #1A287C #3D1A7C

triadic

#1A287C #7C1A28 #287C1A

tetradic

#1A287C #7C1A59 #7C6E1A #1A7C3D

square

#1A287C #7C1A59 #7C6E1A #1A7C3D

split-complementary

#1A287C #7C3D1A #597C1A

monochromatic

#050819 #0F1849 #1A287C #2538AF #3B51D6

Accessibility & contrast

On white

12.82

#1A287C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1A287C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A287C

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A287C	#FFFFFF	#000000	##FFFFFF
##1A287C	1.00	12.82	1.64	12.82
#FFFFFF	12.82	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377F

Deuteranopia (green-blind)

#002D7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1a287c;
/* rgb */ color: rgb(26, 40, 124);
/* oklch */ color: oklch(32.8% 0.142 269.2);

Tailwind

colors: {
  custom: {
    50: '#6862a3',
    500: '#1a287c',
    950: '#000000',
  },
}

SCSS

$custom: #1a287c;
$custom-light: #6862a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1a287c",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 124
  },
  "hsl": {
    "h": 231.429,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32773,
    "c": 0.14221,
    "h": 269.2
  },
  "luminance": 0.03192
}

Semantic roles & 50–950 ramp

primary

#1A287C

secondary

#B0A042

accent

#D040E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1A287C

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

Preview Lab → · Contrast checker → · Palette generator →