#1A288E#1A288E

#1A288E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.6% C 0.167 H 268.8°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#1A288E
RGB	rgb(26, 40, 142)
HSL	hsl(233, 69%, 33%)
HSV	hsv(233, 82%, 56%)
CMYK	cmyk(81.7%, 71.8%, 0%, 44.3%)
CIE-LAB	lab(22.62, 33.36, -57.46)
CIE-LCH	lch(22.62, 66.44, 300.13°)
OKLab	oklab(34.65% -0.0035 -0.1665)
OKLCH	oklch(34.65% 0.167 268.8)
XYZ	xyz(6.0656, 3.6895, 25.9784)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A288E #8E801A

analogous

#1A628E #1A288E #461A8E

triadic

#1A288E #8E1A28 #288E1A

tetradic

#1A288E #8E1A62 #8E801A #1A8E46

square

#1A288E #8E1A62 #8E801A #1A8E46

split-complementary

#1A288E #8E461A #628E1A

monochromatic

#070B27 #11195A #1A288E #2337C2 #4558DD

Accessibility & contrast

On white

12.08

#1A288E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1A288E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A288E

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A288E	#FFFFFF	#000000	##FFFFFF
##1A288E	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#00308C

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1a288e;
/* rgb */ color: rgb(26, 40, 142);
/* oklch */ color: oklch(34.6% 0.167 268.8);

Tailwind

colors: {
  custom: {
    50: '#6d62b0',
    500: '#1a288e',
    950: '#000000',
  },
}

SCSS

$custom: #1a288e;
$custom-light: #6d62b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a288e",
  "rgb": {
    "r": 26,
    "g": 40,
    "b": 142
  },
  "hsl": {
    "h": 232.759,
    "s": 69.048,
    "l": 32.941
  },
  "oklch": {
    "l": 0.34648,
    "c": 0.1665,
    "h": 268.8
  },
  "luminance": 0.0369
}

Semantic roles & 50–950 ramp

primary

#1A288E

secondary

#BEB045

accent

#D73CEC

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1A288E

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

Preview Lab → · Contrast checker → · Palette generator →