#1A288D#1A288D

#1A288D is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.165 H 268.8°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#1A288D
RGB	rgb(26, 40, 141)
HSL	hsl(233, 69%, 33%)
HSV	hsv(233, 82%, 55%)
CMYK	cmyk(81.6%, 71.6%, 0%, 44.7%)
CIE-LAB	lab(22.51, 32.98, -57.01)
CIE-LCH	lch(22.51, 65.87, 300.05°)
OKLab	oklab(34.54% -0.0034 -0.1652)
OKLCH	oklch(34.54% 0.165 268.8)
XYZ	xyz(5.9909, 3.6596, 25.5848)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A288D #8D7F1A

analogous

#1A618D #1A288D #461A8D

triadic

#1A288D #8D1A28 #288D1A

tetradic

#1A288D #8D1A61 #8D7F1A #1A8D46

square

#1A288D #8D1A61 #8D7F1A #1A8D46

split-complementary

#1A288D #8D461A #618D1A

monochromatic

#070B26 #101959 #1A288D #2437C1 #4557DD

Accessibility & contrast

On white

12.12

#1A288D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1A288D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A288D

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A288D	#FFFFFF	#000000	##FFFFFF
##1A288D	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B90

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1a288d;
/* rgb */ color: rgb(26, 40, 141);
/* oklch */ color: oklch(34.5% 0.165 268.8);

Tailwind

colors: {
  custom: {
    50: '#6d62af',
    500: '#1a288d',
    950: '#000000',
  },
}

SCSS

$custom: #1a288d;
$custom-light: #6d62af;
$custom-dark: #000000;

JSON

{
  "hex": "#1a288d",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 141
  },
  "hsl": {
    "h": 232.696,
    "s": 68.862,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34541,
    "c": 0.16519,
    "h": 268.8
  },
  "luminance": 0.0366
}

Semantic roles & 50–950 ramp

primary

#1A288D

secondary

#BEAF45

accent

#D63CEC

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #1A288D

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

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