#1A3579#1A3579

#1A3579 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.121 H 264.6°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#1A3579
RGB	rgb(26, 53, 121)
HSL	hsl(223, 65%, 29%)
HSV	hsv(223, 79%, 47%)
CMYK	cmyk(78.5%, 56.2%, 0%, 52.5%)
CIE-LAB	lab(24.15, 16.14, -41.78)
CIE-LCH	lch(24.15, 44.79, 291.12°)
OKLab	oklab(35.19% -0.0114 -0.1204)
OKLCH	oklch(35.19% 0.121 264.6)
XYZ	xyz(5.1491, 4.1457, 18.6143)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3579 #795E1A

analogous

#1A6579 #1A3579 #2F1A79

triadic

#1A3579 #791A35 #35791A

tetradic

#1A3579 #791A65 #795E1A #1A792F

square

#1A3579 #791A65 #795E1A #1A792F

split-complementary

#1A3579 #792F1A #65791A

monochromatic

#050B19 #0F1F47 #1A3579 #254BAB #3965D4

Accessibility & contrast

On white

11.48

#1A3579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1A3579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3579

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3579	#FFFFFF	#000000	##FFFFFF
##1A3579	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7B

Deuteranopia (green-blind)

#003578

Tritanopia (blue-blind)

#004651

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1a3579;
/* rgb */ color: rgb(26, 53, 121);
/* oklch */ color: oklch(35.2% 0.121 264.6);

Tailwind

colors: {
  custom: {
    50: '#666ba0',
    500: '#1a3579',
    950: '#000000',
  },
}

SCSS

$custom: #1a3579;
$custom-light: #666ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3579",
  "rgb": {
    "r": 26,
    "g": 53,
    "b": 121
  },
  "hsl": {
    "h": 222.947,
    "s": 64.626,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35188,
    "c": 0.12093,
    "h": 264.6
  },
  "luminance": 0.04146
}

Semantic roles & 50–950 ramp

primary

#1A3579

secondary

#AD8F41

accent

#B840E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #1A3579

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

Preview Lab → · Contrast checker → · Palette generator →