#1A3879#1A3879

#1A3879 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.9% C 0.117 H 263.1°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#1A3879
RGB	rgb(26, 56, 121)
HSL	hsl(221, 65%, 29%)
HSV	hsv(221, 79%, 47%)
CMYK	cmyk(78.5%, 53.7%, 0%, 52.5%)
CIE-LAB	lab(25.04, 14.01, -40.34)
CIE-LCH	lch(25.04, 42.70, 289.16°)
OKLab	oklab(35.86% -0.014 -0.1161)
OKLCH	oklch(35.86% 0.117 263.1)
XYZ	xyz(5.2901, 4.4278, 18.6613)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3879 #795B1A

analogous

#1A6879 #1A3879 #2C1A79

triadic

#1A3879 #791A38 #38791A

tetradic

#1A3879 #791A68 #795B1A #1A792C

square

#1A3879 #791A68 #795B1A #1A792C

split-complementary

#1A3879 #792C1A #68791A

monochromatic

#050C19 #0F2147 #1A3879 #254FAB #396AD4

Accessibility & contrast

On white

11.14

#1A3879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1A3879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3879

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3879	#FFFFFF	#000000	##FFFFFF
##1A3879	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D407B

Deuteranopia (green-blind)

#003778

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1a3879;
/* rgb */ color: rgb(26, 56, 121);
/* oklch */ color: oklch(35.9% 0.117 263.1);

Tailwind

colors: {
  custom: {
    50: '#666ea0',
    500: '#1a3879',
    950: '#000000',
  },
}

SCSS

$custom: #1a3879;
$custom-light: #666ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3879",
  "rgb": {
    "r": 26,
    "g": 56,
    "b": 121
  },
  "hsl": {
    "h": 221.053,
    "s": 64.626,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35864,
    "c": 0.11693,
    "h": 263.1
  },
  "luminance": 0.04428
}

Semantic roles & 50–950 ramp

primary

#1A3879

secondary

#AD8B41

accent

#B340E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1A3879

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

Preview Lab → · Contrast checker → · Palette generator →