#1A3397#1A3397

#1A3397 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.166 H 266.7°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1A3397
RGB	rgb(26, 51, 151)
HSL	hsl(228, 71%, 35%)
HSV	hsv(228, 83%, 59%)
CMYK	cmyk(82.8%, 66.2%, 0%, 40.8%)
CIE-LAB	lab(26.22, 29.53, -57.10)
CIE-LCH	lch(26.22, 64.28, 297.34°)
OKLab	oklab(37.54% -0.0095 -0.1653)
OKLCH	oklch(37.54% 0.166 266.7)
XYZ	xyz(7.1938, 4.8208, 29.8235)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3397 #977E1A

analogous

#1A7297 #1A3397 #401A97

triadic

#1A3397 #971A33 #33971A

tetradic

#1A3397 #971A72 #977E1A #1A9740

square

#1A3397 #971A72 #977E1A #1A9740

split-complementary

#1A3397 #97401A #72971A

monochromatic

#08102F #112163 #1A3397 #2345CB #4B69E0

Accessibility & contrast

On white

10.69

#1A3397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1A3397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3397

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3397	#FFFFFF	#000000	##FFFFFF
##1A3397	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449A

Deuteranopia (green-blind)

#003895

Tritanopia (blue-blind)

#004E60

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a3397;
/* rgb */ color: rgb(26, 51, 151);
/* oklch */ color: oklch(37.5% 0.166 266.7);

Tailwind

colors: {
  custom: {
    50: '#6e6ab7',
    500: '#1a3397',
    950: '#000000',
  },
}

SCSS

$custom: #1a3397;
$custom-light: #6e6ab7;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3397",
  "rgb": {
    "r": 26,
    "g": 51,
    "b": 151
  },
  "hsl": {
    "h": 228,
    "s": 70.621,
    "l": 34.706
  },
  "oklch": {
    "l": 0.37544,
    "c": 0.16561,
    "h": 266.7
  },
  "luminance": 0.04822
}

Semantic roles & 50–950 ramp

primary

#1A3397

secondary

#C2AA4B

accent

#CA3AED

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1A3397

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

Preview Lab → · Contrast checker → · Palette generator →