#1A3A8A#1A3A8A

#1A3A8A is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.7% C 0.139 H 264.2°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A8A
RGB	rgb(26, 58, 138)
HSL	hsl(223, 68%, 32%)
HSV	hsv(223, 81%, 54%)
CMYK	cmyk(81.2%, 58%, 0%, 45.9%)
CIE-LAB	lab(26.96, 19.55, -47.87)
CIE-LCH	lch(26.96, 51.71, 292.22°)
OKLab	oklab(37.74% -0.014 -0.1382)
OKLCH	oklch(37.74% 0.139 264.2)
XYZ	xyz(6.5249, 5.0799, 24.6765)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A8A #8A6A1A

analogous

#1A728A #1A3A8A #321A8A

triadic

#1A3A8A #8A1A3A #3A8A1A

tetradic

#1A3A8A #8A1A72 #8A6A1A #1A8A32

square

#1A3A8A #8A1A72 #8A6A1A #1A8A32

split-complementary

#1A3A8A #8A321A #728A1A

monochromatic

#070F23 #102457 #1A3A8A #2450BD #436EDC

Accessibility & contrast

On white

10.42

#1A3A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1A3A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A8A

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A8A	#FFFFFF	#000000	##FFFFFF
##1A3A8A	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458D

Deuteranopia (green-blind)

#003B88

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3a8a;
/* rgb */ color: rgb(26, 58, 138);
/* oklch */ color: oklch(37.7% 0.139 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a6fad',
    500: '#1a3a8a',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a8a;
$custom-light: #6a6fad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a8a",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 138
  },
  "hsl": {
    "h": 222.857,
    "s": 68.293,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37742,
    "c": 0.13889,
    "h": 264.2
  },
  "luminance": 0.05081
}

Semantic roles & 50–950 ramp

primary

#1A3A8A

secondary

#BD9A43

accent

#B93DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A3A8A

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

Preview Lab → · Contrast checker → · Palette generator →