#1A3771#1A3771

#1A3771 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.106 H 262.4°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#1A3771
RGB	rgb(26, 55, 113)
HSL	hsl(220, 63%, 27%)
HSV	hsv(220, 77%, 44%)
CMYK	cmyk(77%, 51.3%, 0%, 55.7%)
CIE-LAB	lab(24.14, 11.43, -36.70)
CIE-LCH	lch(24.14, 38.44, 287.30°)
OKLab	oklab(34.99% -0.0141 -0.1054)
OKLCH	oklch(34.99% 0.106 262.4)
XYZ	xyz(4.7718, 4.1437, 16.1679)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3771 #71541A

analogous

#1A6371 #1A3771 #291A71

triadic

#1A3771 #711A37 #37711A

tetradic

#1A3771 #711A63 #71541A #1A7129

square

#1A3771 #711A63 #71541A #1A7129

split-complementary

#1A3771 #71291A #63711A

monochromatic

#060C19 #0F1F3F #1A3771 #254FA3 #3569D0

Accessibility & contrast

On white

11.48

#1A3771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1A3771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3771

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3771	#FFFFFF	#000000	##FFFFFF
##1A3771	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)

#163E73

Deuteranopia (green-blind)

#003670

Tritanopia (blue-blind)

#00454E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1a3771;
/* rgb */ color: rgb(26, 55, 113);
/* oklch */ color: oklch(35.0% 0.106 262.4);

Tailwind

colors: {
  custom: {
    50: '#646d9a',
    500: '#1a3771',
    950: '#000000',
  },
}

SCSS

$custom: #1a3771;
$custom-light: #646d9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3771",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 113
  },
  "hsl": {
    "h": 220,
    "s": 62.59,
    "l": 27.255
  },
  "oklch": {
    "l": 0.3499,
    "c": 0.10635,
    "h": 262.4
  },
  "luminance": 0.04144
}

Semantic roles & 50–950 ramp

primary

#1A3771

secondary

#A68441

accent

#AF42E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1A3771

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

Preview Lab → · Contrast checker → · Palette generator →