#1A3587#1A3587

#1A3587 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.141 H 265.7°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#1A3587
RGB	rgb(26, 53, 135)
HSL	hsl(225, 68%, 32%)
HSV	hsv(225, 81%, 53%)
CMYK	cmyk(80.7%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(25.30, 21.83, -48.70)
CIE-LCH	lch(25.30, 53.37, 294.15°)
OKLab	oklab(36.42% -0.0106 -0.1407)
OKLCH	oklch(36.42% 0.141 265.7)
XYZ	xyz(6.0707, 4.5144, 23.4684)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3587 #876C1A

analogous

#1A6C87 #1A3587 #361A87

triadic

#1A3587 #871A35 #35871A

tetradic

#1A3587 #871A6C #876C1A #1A8736

square

#1A3587 #871A6C #876C1A #1A8736

split-complementary

#1A3587 #87361A #6C871A

monochromatic

#060D20 #102154 #1A3587 #2449BA #4167DA

Accessibility & contrast

On white

11.04

#1A3587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1A3587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3587

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3587	#FFFFFF	#000000	##FFFFFF
##1A3587	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003785

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a3587;
/* rgb */ color: rgb(26, 53, 135);
/* oklch */ color: oklch(36.4% 0.141 265.7);

Tailwind

colors: {
  custom: {
    50: '#6a6bab',
    500: '#1a3587',
    950: '#000000',
  },
}

SCSS

$custom: #1a3587;
$custom-light: #6a6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3587",
  "rgb": {
    "r": 26,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 225.138,
    "s": 67.702,
    "l": 31.569
  },
  "oklch": {
    "l": 0.3642,
    "c": 0.14112,
    "h": 265.7
  },
  "luminance": 0.04515
}

Semantic roles & 50–950 ramp

primary

#1A3587

secondary

#BA9D42

accent

#C03DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1A3587

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

Preview Lab → · Contrast checker → · Palette generator →