#1A3B9E#1A3B9E

#1A3B9E is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.8% C 0.165 H 265.2°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#1A3B9E
RGB	rgb(26, 59, 158)
HSL	hsl(225, 72%, 36%)
HSV	hsv(225, 84%, 62%)
CMYK	cmyk(83.5%, 62.7%, 0%, 38%)
CIE-LAB	lab(28.94, 26.85, -56.90)
CIE-LCH	lch(28.94, 62.92, 295.26°)
OKLab	oklab(39.75% -0.0139 -0.1647)
OKLCH	oklch(39.75% 0.165 265.2)
XYZ	xyz(8.1593, 5.8152, 33.0335)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3B9E #9E7D1A

analogous

#1A7D9E #1A3B9E #3B1A9E

triadic

#1A3B9E #9E1A3B #3B9E1A

tetradic

#1A3B9E #9E1A7D #9E7D1A #1A9E3B

square

#1A3B9E #9E1A7D #9E7D1A #1A9E3B

split-complementary

#1A3B9E #9E3B1A #7D9E1A

monochromatic

#091435 #112769 #1A3B9E #234FD3 #5075E2

Accessibility & contrast

On white

9.71

#1A3B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1A3B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3B9E

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3B9E	#FFFFFF	#000000	##FFFFFF
##1A3B9E	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#003E9C

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1a3b9e;
/* rgb */ color: rgb(26, 59, 158);
/* oklch */ color: oklch(39.8% 0.165 265.2);

Tailwind

colors: {
  custom: {
    50: '#6f70bc',
    500: '#1a3b9e',
    950: '#000000',
  },
}

SCSS

$custom: #1a3b9e;
$custom-light: #6f70bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3b9e",
  "rgb": {
    "r": 26,
    "g": 59,
    "b": 158
  },
  "hsl": {
    "h": 225,
    "s": 71.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39754,
    "c": 0.16528,
    "h": 265.2
  },
  "luminance": 0.05816
}

Semantic roles & 50–950 ramp

primary

#1A3B9E

secondary

#C5A74F

accent

#C139EE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1A3B9E

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

Preview Lab → · Contrast checker → · Palette generator →