#1A3588#1A3588

#1A3588 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.143 H 265.7°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#1A3588
RGB	rgb(26, 53, 136)
HSL	hsl(225, 68%, 32%)
HSV	hsv(225, 81%, 53%)
CMYK	cmyk(80.9%, 61%, 0%, 46.7%)
CIE-LAB	lab(25.39, 22.23, -49.18)
CIE-LCH	lch(25.39, 53.98, 294.33°)
OKLab	oklab(36.51% -0.0106 -0.1421)
OKLCH	oklch(36.51% 0.143 265.7)
XYZ	xyz(6.1415, 4.5427, 23.8409)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3588 #886D1A

analogous

#1A6C88 #1A3588 #361A88

triadic

#1A3588 #881A35 #35881A

tetradic

#1A3588 #881A6C #886D1A #1A8836

square

#1A3588 #881A6C #886D1A #1A8836

split-complementary

#1A3588 #88361A #6C881A

monochromatic

#060D21 #102155 #1A3588 #2449BB #4267DB

Accessibility & contrast

On white

11.00

#1A3588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1A3588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3588

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3588	#FFFFFF	#000000	##FFFFFF
##1A3588	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418B

Deuteranopia (green-blind)

#003786

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a3588;
/* rgb */ color: rgb(26, 53, 136);
/* oklch */ color: oklch(36.5% 0.143 265.7);

Tailwind

colors: {
  custom: {
    50: '#6a6bab',
    500: '#1a3588',
    950: '#000000',
  },
}

SCSS

$custom: #1a3588;
$custom-light: #6a6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3588",
  "rgb": {
    "r": 26,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 225.273,
    "s": 67.901,
    "l": 31.765
  },
  "oklch": {
    "l": 0.36511,
    "c": 0.14253,
    "h": 265.7
  },
  "luminance": 0.04543
}

Semantic roles & 50–950 ramp

primary

#1A3588

secondary

#BB9E43

accent

#C03DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1A3588

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

Preview Lab → · Contrast checker → · Palette generator →