#1A3F87#1A3F87

#1A3F87 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.128 H 261.9°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F87
RGB	rgb(26, 63, 135)
HSL	hsl(220, 68%, 32%)
HSV	hsv(220, 81%, 53%)
CMYK	cmyk(80.7%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(28.18, 14.84, -44.03)
CIE-LCH	lch(28.18, 46.47, 288.62°)
OKLab	oklab(38.59% -0.018 -0.1268)
OKLCH	oklch(38.59% 0.128 261.9)
XYZ	xyz(6.5751, 5.5231, 23.6365)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F87 #87621A

analogous

#1A7687 #1A3F87 #2C1A87

triadic

#1A3F87 #871A3F #3F871A

tetradic

#1A3F87 #871A76 #87621A #1A872C

square

#1A3F87 #871A76 #87621A #1A872C

split-complementary

#1A3F87 #872C1A #76871A

monochromatic

#060F20 #102754 #1A3F87 #2457BA #4175DA

Accessibility & contrast

On white

9.98

#1A3F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1A3F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F87

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F87	#FFFFFF	#000000	##FFFFFF
##1A3F87	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E488A

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1a3f87;
/* rgb */ color: rgb(26, 63, 135);
/* oklch */ color: oklch(38.6% 0.128 261.9);

Tailwind

colors: {
  custom: {
    50: '#6973aa',
    500: '#1a3f87',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f87;
$custom-light: #6973aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f87",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 219.633,
    "s": 67.702,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38588,
    "c": 0.1281,
    "h": 261.9
  },
  "luminance": 0.05524
}

Semantic roles & 50–950 ramp

primary

#1A3F87

secondary

#BA9242

accent

#B03DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1A3F87

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

Preview Lab → · Contrast checker → · Palette generator →