#1A3383#1A3383

#1A3383 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.138 H 266.1°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#1A3383
RGB	rgb(26, 51, 131)
HSL	hsl(226, 67%, 31%)
HSV	hsv(226, 80%, 51%)
CMYK	cmyk(80.2%, 61.1%, 0%, 48.6%)
CIE-LAB	lab(24.40, 21.62, -47.67)
CIE-LCH	lch(24.40, 52.34, 294.40°)
OKLab	oklab(35.64% -0.0093 -0.1377)
OKLCH	oklch(35.64% 0.138 266.1)
XYZ	xyz(5.7051, 4.2253, 21.9832)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3383 #836A1A

analogous

#1A6783 #1A3383 #351A83

triadic

#1A3383 #831A33 #33831A

tetradic

#1A3383 #831A67 #836A1A #1A8335

square

#1A3383 #831A67 #836A1A #1A8335

split-complementary

#1A3383 #83351A #67831A

monochromatic

#060B1D #101F50 #1A3383 #2447B6 #3F63D9

Accessibility & contrast

On white

11.38

#1A3383 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1A3383 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3383

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3383	#FFFFFF	#000000	##FFFFFF
##1A3383	1.00	11.38	1.85	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F86

Deuteranopia (green-blind)

#003581

Tritanopia (blue-blind)

#004755

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3383;
/* rgb */ color: rgb(26, 51, 131);
/* oklch */ color: oklch(35.6% 0.138 266.1);

Tailwind

colors: {
  custom: {
    50: '#696aa8',
    500: '#1a3383',
    950: '#000000',
  },
}

SCSS

$custom: #1a3383;
$custom-light: #696aa8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3383",
  "rgb": {
    "r": 26,
    "g": 51,
    "b": 131
  },
  "hsl": {
    "h": 225.714,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.3564,
    "c": 0.13805,
    "h": 266.1
  },
  "luminance": 0.04226
}

Semantic roles & 50–950 ramp

primary

#1A3383

secondary

#B79B42

accent

#C13EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1A3383

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

Preview Lab → · Contrast checker → · Palette generator →