#1A3783#1A3783

#1A3783 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.133 H 264.7°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#1A3783
RGB	rgb(26, 55, 131)
HSL	hsl(223, 67%, 31%)
HSV	hsv(223, 80%, 51%)
CMYK	cmyk(80.2%, 58%, 0%, 48.6%)
CIE-LAB	lab(25.53, 18.81, -45.83)
CIE-LCH	lch(25.53, 49.54, 292.32°)
OKLab	oklab(36.49% -0.0122 -0.1323)
OKLCH	oklch(36.49% 0.133 264.7)
XYZ	xyz(5.8875, 4.5900, 22.0440)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3783 #83661A

analogous

#1A6B83 #1A3783 #321A83

triadic

#1A3783 #831A37 #37831A

tetradic

#1A3783 #831A6B #83661A #1A8332

square

#1A3783 #831A6B #83661A #1A8332

split-complementary

#1A3783 #83321A #6B831A

monochromatic

#060C1D #102250 #1A3783 #244CB6 #3F69D9

Accessibility & contrast

On white

10.95

#1A3783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1A3783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3783

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3783	#FFFFFF	#000000	##FFFFFF
##1A3783	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003882

Tritanopia (blue-blind)

#004A57

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a3783;
/* rgb */ color: rgb(26, 55, 131);
/* oklch */ color: oklch(36.5% 0.133 264.7);

Tailwind

colors: {
  custom: {
    50: '#686da8',
    500: '#1a3783',
    950: '#000000',
  },
}

SCSS

$custom: #1a3783;
$custom-light: #686da8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3783",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 131
  },
  "hsl": {
    "h": 223.429,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36487,
    "c": 0.13282,
    "h": 264.7
  },
  "luminance": 0.04591
}

Semantic roles & 50–950 ramp

primary

#1A3783

secondary

#B79642

accent

#BA3EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3783

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

Preview Lab → · Contrast checker → · Palette generator →