#1A3A9B#1A3A9B

#1A3A9B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.162 H 265.3°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A9B
RGB	rgb(26, 58, 155)
HSL	hsl(225, 71%, 35%)
HSV	hsv(225, 83%, 61%)
CMYK	cmyk(83.2%, 62.6%, 0%, 39.2%)
CIE-LAB	lab(28.41, 26.35, -55.95)
CIE-LCH	lch(28.41, 61.85, 295.22°)
OKLab	oklab(39.28% -0.0133 -0.1619)
OKLCH	oklch(39.28% 0.162 265.3)
XYZ	xyz(7.8534, 5.6113, 31.6732)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A9B #9B7B1A

analogous

#1A7B9B #1A3A9B #3A1A9B

triadic

#1A3A9B #9B1A3A #3A9B1A

tetradic

#1A3A9B #9B1A7B #9B7B1A #1A9B3A

square

#1A3A9B #9B1A7B #9B7B1A #1A9B3A

split-complementary

#1A3A9B #9B3A1A #7B9B1A

monochromatic

#081332 #112667 #1A3A9B #234ECF #4E73E1

Accessibility & contrast

On white

9.89

#1A3A9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1A3A9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A9B

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A9B	#FFFFFF	#000000	##FFFFFF
##1A3A9B	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#003D99

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1a3a9b;
/* rgb */ color: rgb(26, 58, 155);
/* oklch */ color: oklch(39.3% 0.162 265.3);

Tailwind

colors: {
  custom: {
    50: '#6f6fb9',
    500: '#1a3a9b',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a9b;
$custom-light: #6f6fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a9b",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 155
  },
  "hsl": {
    "h": 225.116,
    "s": 71.271,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39277,
    "c": 0.16246,
    "h": 265.3
  },
  "luminance": 0.05612
}

Semantic roles & 50–950 ramp

primary

#1A3A9B

secondary

#C4A64D

accent

#C13AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1A3A9B

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

Preview Lab → · Contrast checker → · Palette generator →