#1A3371#1A3371

#1A3371 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.112 H 264.6°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#1A3371
RGB	rgb(26, 51, 113)
HSL	hsl(223, 63%, 27%)
HSV	hsv(223, 77%, 44%)
CMYK	cmyk(77%, 54.9%, 0%, 55.7%)
CIE-LAB	lab(22.93, 14.28, -38.66)
CIE-LCH	lch(22.93, 41.21, 290.28°)
OKLab	oklab(34.07% -0.0105 -0.1112)
OKLCH	oklch(34.07% 0.112 264.6)
XYZ	xyz(4.5894, 3.7790, 16.1071)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3371 #71581A

analogous

#1A5E71 #1A3371 #2D1A71

triadic

#1A3371 #711A33 #33711A

tetradic

#1A3371 #711A5E #71581A #1A712D

square

#1A3371 #711A5E #71581A #1A712D

split-complementary

#1A3371 #712D1A #5E711A

monochromatic

#060B19 #0F1D3F #1A3371 #2549A3 #3562D0

Accessibility & contrast

On white

11.96

#1A3371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1A3371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3371

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3371	#FFFFFF	#000000	##FFFFFF
##1A3371	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093B73

Deuteranopia (green-blind)

#003370

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1a3371;
/* rgb */ color: rgb(26, 51, 113);
/* oklch */ color: oklch(34.1% 0.112 264.6);

Tailwind

colors: {
  custom: {
    50: '#646a9a',
    500: '#1a3371',
    950: '#000000',
  },
}

SCSS

$custom: #1a3371;
$custom-light: #646a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3371",
  "rgb": {
    "r": 26,
    "g": 51,
    "b": 113
  },
  "hsl": {
    "h": 222.759,
    "s": 62.59,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34065,
    "c": 0.11175,
    "h": 264.6
  },
  "luminance": 0.0378
}

Semantic roles & 50–950 ramp

primary

#1A3371

secondary

#A68941

accent

#B742E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1A3371

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

Preview Lab → · Contrast checker → · Palette generator →