#1A378A#1A378A

#1A378A is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.143 H 265.2°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#1A378A
RGB	rgb(26, 55, 138)
HSL	hsl(224, 68%, 32%)
HSV	hsv(224, 81%, 54%)
CMYK	cmyk(81.2%, 60.1%, 0%, 45.9%)
CIE-LAB	lab(26.12, 21.64, -49.24)
CIE-LCH	lch(26.12, 53.79, 293.73°)
OKLab	oklab(37.11% -0.0119 -0.1423)
OKLCH	oklch(37.11% 0.143 265.2)
XYZ	xyz(6.3780, 4.7862, 24.6275)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A378A #8A6D1A

analogous

#1A6F8A #1A378A #351A8A

triadic

#1A378A #8A1A37 #378A1A

tetradic

#1A378A #8A1A6F #8A6D1A #1A8A35

square

#1A378A #8A1A6F #8A6D1A #1A8A35

split-complementary

#1A378A #8A351A #6F8A1A

monochromatic

#070E23 #102257 #1A378A #244CBD #436ADC

Accessibility & contrast

On white

10.73

#1A378A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1A378A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A378A

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A378A	#FFFFFF	#000000	##FFFFFF
##1A378A	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438D

Deuteranopia (green-blind)

#003988

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a378a;
/* rgb */ color: rgb(26, 55, 138);
/* oklch */ color: oklch(37.1% 0.143 265.2);

Tailwind

colors: {
  custom: {
    50: '#6a6dad',
    500: '#1a378a',
    950: '#000000',
  },
}

SCSS

$custom: #1a378a;
$custom-light: #6a6dad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a378a",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 138
  },
  "hsl": {
    "h": 224.464,
    "s": 68.293,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37108,
    "c": 0.14277,
    "h": 265.2
  },
  "luminance": 0.04787
}

Semantic roles & 50–950 ramp

primary

#1A378A

secondary

#BD9D43

accent

#BE3DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A378A

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

Preview Lab → · Contrast checker → · Palette generator →