#1A3187#1A3187

#1A3187 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.146 H 266.9°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#1A3187
RGB	rgb(26, 49, 135)
HSL	hsl(227, 68%, 32%)
HSV	hsv(227, 81%, 53%)
CMYK	cmyk(80.7%, 63.7%, 0%, 47.1%)
CIE-LAB	lab(24.21, 24.61, -50.49)
CIE-LCH	lch(24.21, 56.17, 295.99°)
OKLab	oklab(35.6% -0.008 -0.146)
OKLCH	oklch(35.6% 0.146 266.9)
XYZ	xyz(5.8960, 4.1648, 23.4101)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3187 #87701A

analogous

#1A6887 #1A3187 #391A87

triadic

#1A3187 #871A31 #31871A

tetradic

#1A3187 #871A68 #87701A #1A8739

square

#1A3187 #871A68 #87701A #1A8739

split-complementary

#1A3187 #87391A #68871A

monochromatic

#060C20 #101E54 #1A3187 #2444BA #4161DA

Accessibility & contrast

On white

11.46

#1A3187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1A3187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3187

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3187	#FFFFFF	#000000	##FFFFFF
##1A3187	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8A

Deuteranopia (green-blind)

#003585

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3187;
/* rgb */ color: rgb(26, 49, 135);
/* oklch */ color: oklch(35.6% 0.146 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a68ab',
    500: '#1a3187',
    950: '#000000',
  },
}

SCSS

$custom: #1a3187;
$custom-light: #6a68ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3187",
  "rgb": {
    "r": 26,
    "g": 49,
    "b": 135
  },
  "hsl": {
    "h": 227.339,
    "s": 67.702,
    "l": 31.569
  },
  "oklch": {
    "l": 0.35605,
    "c": 0.14625,
    "h": 266.9
  },
  "luminance": 0.04166
}

Semantic roles & 50–950 ramp

primary

#1A3187

secondary

#BAA142

accent

#C63DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1A3187

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

Preview Lab → · Contrast checker → · Palette generator →