#1A378E#1A378E

#1A378E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.148 H 265.5°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#1A378E
RGB	rgb(26, 55, 142)
HSL	hsl(225, 69%, 33%)
HSV	hsv(225, 82%, 56%)
CMYK	cmyk(81.7%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(26.46, 23.25, -51.16)
CIE-LCH	lch(26.46, 56.20, 294.44°)
OKLab	oklab(37.47% -0.0117 -0.1479)
OKLCH	oklch(37.47% 0.148 265.5)
XYZ	xyz(6.6730, 4.9042, 26.1809)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A378E #8E711A

analogous

#1A718E #1A378E #371A8E

triadic

#1A378E #8E1A37 #378E1A

tetradic

#1A378E #8E1A71 #8E711A #1A8E37

square

#1A378E #8E1A71 #8E711A #1A8E37

split-complementary

#1A378E #8E371A #718E1A

monochromatic

#070F27 #11235A #1A378E #234BC2 #456BDD

Accessibility & contrast

On white

10.60

#1A378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1A378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A378E

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A378E	#FFFFFF	#000000	##FFFFFF
##1A378E	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004491

Deuteranopia (green-blind)

#00398C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a378e;
/* rgb */ color: rgb(26, 55, 142);
/* oklch */ color: oklch(37.5% 0.148 265.5);

Tailwind

colors: {
  custom: {
    50: '#6b6db0',
    500: '#1a378e',
    950: '#000000',
  },
}

SCSS

$custom: #1a378e;
$custom-light: #6b6db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1a378e",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 225,
    "s": 69.048,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37472,
    "c": 0.14838,
    "h": 265.5
  },
  "luminance": 0.04905
}

Semantic roles & 50–950 ramp

primary

#1A378E

secondary

#BEA045

accent

#C03CEC

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1A378E

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

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