#1A3F9A#1A3F9A

#1A3F9A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.155 H 263.9°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F9A
RGB	rgb(26, 63, 154)
HSL	hsl(223, 71%, 35%)
HSV	hsv(223, 83%, 60%)
CMYK	cmyk(83.1%, 59.1%, 0%, 39.6%)
CIE-LAB	lab(29.68, 22.54, -53.27)
CIE-LCH	lch(29.68, 57.84, 292.93°)
OKLab	oklab(40.2% -0.0164 -0.154)
OKLCH	oklch(40.2% 0.155 263.9)
XYZ	xyz(8.0342, 6.1067, 31.3209)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F9A #9A751A

analogous

#1A7F9A #1A3F9A #351A9A

triadic

#1A3F9A #9A1A3F #3F9A1A

tetradic

#1A3F9A #9A1A7F #9A751A #1A9A35

square

#1A3F9A #9A1A7F #9A751A #1A9A35

split-complementary

#1A3F9A #9A351A #7F9A1A

monochromatic

#081431 #112A66 #1A3F9A #2354CE #4D78E1

Accessibility & contrast

On white

9.45

#1A3F9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1A3F9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F9A

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F9A	#FFFFFF	#000000	##FFFFFF
##1A3F9A	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1a3f9a;
/* rgb */ color: rgb(26, 63, 154);
/* oklch */ color: oklch(40.2% 0.155 263.9);

Tailwind

colors: {
  custom: {
    50: '#6e73b9',
    500: '#1a3f9a',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f9a;
$custom-light: #6e73b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f9a",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 154
  },
  "hsl": {
    "h": 222.656,
    "s": 71.111,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40199,
    "c": 0.15483,
    "h": 263.9
  },
  "luminance": 0.06108
}

Semantic roles & 50–950 ramp

primary

#1A3F9A

secondary

#C3A14D

accent

#BA3AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1A3F9A

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

Preview Lab → · Contrast checker → · Palette generator →