#1A3B87#1A3B87

#1A3B87 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.7% C 0.133 H 263.6°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#1A3B87
RGB	rgb(26, 59, 135)
HSL	hsl(222, 68%, 32%)
HSV	hsv(222, 81%, 53%)
CMYK	cmyk(80.7%, 56.3%, 0%, 47.1%)
CIE-LAB	lab(27.01, 17.63, -45.93)
CIE-LCH	lch(27.01, 49.20, 291.00°)
OKLab	oklab(37.7% -0.0149 -0.1325)
OKLCH	oklch(37.7% 0.133 263.6)
XYZ	xyz(6.3616, 5.0961, 23.5653)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3B87 #87661A

analogous

#1A7287 #1A3B87 #301A87

triadic

#1A3B87 #871A3B #3B871A

tetradic

#1A3B87 #871A72 #87661A #1A8730

square

#1A3B87 #871A72 #87661A #1A8730

split-complementary

#1A3B87 #87301A #72871A

monochromatic

#060E20 #102554 #1A3B87 #2451BA #416FDA

Accessibility & contrast

On white

10.40

#1A3B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1A3B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3B87

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3B87	#FFFFFF	#000000	##FFFFFF
##1A3B87	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458A

Deuteranopia (green-blind)

#003B86

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3b87;
/* rgb */ color: rgb(26, 59, 135);
/* oklch */ color: oklch(37.7% 0.133 263.6);

Tailwind

colors: {
  custom: {
    50: '#6970ab',
    500: '#1a3b87',
    950: '#000000',
  },
}

SCSS

$custom: #1a3b87;
$custom-light: #6970ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3b87",
  "rgb": {
    "r": 26,
    "g": 59,
    "b": 135
  },
  "hsl": {
    "h": 221.835,
    "s": 67.702,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37701,
    "c": 0.13332,
    "h": 263.6
  },
  "luminance": 0.05097
}

Semantic roles & 50–950 ramp

primary

#1A3B87

secondary

#BA9642

accent

#B63DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3B87

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

Preview Lab → · Contrast checker → · Palette generator →