#1A3F9E#1A3F9E

#1A3F9E is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.160 H 264.2°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F9E
RGB	rgb(26, 63, 158)
HSL	hsl(223, 72%, 36%)
HSV	hsv(223, 84%, 62%)
CMYK	cmyk(83.5%, 60.1%, 0%, 38%)
CIE-LAB	lab(30.02, 24.13, -55.15)
CIE-LCH	lch(30.02, 60.20, 293.63°)
OKLab	oklab(40.56% -0.0162 -0.1595)
OKLCH	oklch(40.56% 0.16 264.2)
XYZ	xyz(8.3729, 6.2422, 33.1047)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F9E #9E791A

analogous

#1A819E #1A3F9E #371A9E

triadic

#1A3F9E #9E1A3F #3F9E1A

tetradic

#1A3F9E #9E1A81 #9E791A #1A9E37

square

#1A3F9E #9E1A81 #9E791A #1A9E37

split-complementary

#1A3F9E #9E371A #819E1A

monochromatic

#091535 #112A69 #1A3F9E #2354D3 #5079E2

Accessibility & contrast

On white

9.34

#1A3F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1A3F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F9E

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F9E	#FFFFFF	#000000	##FFFFFF
##1A3F9E	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1a3f9e;
/* rgb */ color: rgb(26, 63, 158);
/* oklch */ color: oklch(40.6% 0.160 264.2);

Tailwind

colors: {
  custom: {
    50: '#6f73bb',
    500: '#1a3f9e',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f9e;
$custom-light: #6f73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f9e",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 158
  },
  "hsl": {
    "h": 223.182,
    "s": 71.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40555,
    "c": 0.1603,
    "h": 264.2
  },
  "luminance": 0.06243
}

Semantic roles & 50–950 ramp

primary

#1A3F9E

secondary

#C5A44F

accent

#BC39EE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1A3F9E

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

Preview Lab → · Contrast checker → · Palette generator →