#1A3F9D#1A3F9D

#1A3F9D is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.159 H 264.1°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F9D
RGB	rgb(26, 63, 157)
HSL	hsl(223, 72%, 36%)
HSV	hsv(223, 83%, 62%)
CMYK	cmyk(83.4%, 59.9%, 0%, 38.4%)
CIE-LAB	lab(29.93, 23.73, -54.68)
CIE-LCH	lch(29.93, 59.61, 293.46°)
OKLab	oklab(40.47% -0.0163 -0.1581)
OKLCH	oklch(40.47% 0.159 264.1)
XYZ	xyz(8.2871, 6.2079, 32.6532)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F9D #9D781A

analogous

#1A809D #1A3F9D #361A9D

triadic

#1A3F9D #9D1A3F #3F9D1A

tetradic

#1A3F9D #9D1A80 #9D781A #1A9D36

square

#1A3F9D #9D1A80 #9D781A #1A9D36

split-complementary

#1A3F9D #9D361A #809D1A

monochromatic

#091534 #112A68 #1A3F9D #2354D2 #4F79E2

Accessibility & contrast

On white

9.37

#1A3F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1A3F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F9D

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F9D	#FFFFFF	#000000	##FFFFFF
##1A3F9D	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA0

Deuteranopia (green-blind)

#00419B

Tritanopia (blue-blind)

#005767

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1a3f9d;
/* rgb */ color: rgb(26, 63, 157);
/* oklch */ color: oklch(40.5% 0.159 264.1);

Tailwind

colors: {
  custom: {
    50: '#6f73bb',
    500: '#1a3f9d',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f9d;
$custom-light: #6f73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f9d",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 157
  },
  "hsl": {
    "h": 223.053,
    "s": 71.585,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40465,
    "c": 0.15894,
    "h": 264.1
  },
  "luminance": 0.06209
}

Semantic roles & 50–950 ramp

primary

#1A3F9D

secondary

#C4A34E

accent

#BB39EE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1A3F9D

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

Preview Lab → · Contrast checker → · Palette generator →