#1A398C#1A398C

#1A398C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.143 H 264.7°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1A398C
RGB	rgb(26, 57, 140)
HSL	hsl(224, 69%, 33%)
HSV	hsv(224, 81%, 55%)
CMYK	cmyk(81.4%, 59.3%, 0%, 45.1%)
CIE-LAB	lab(26.84, 21.06, -49.30)
CIE-LCH	lch(26.84, 53.61, 293.13°)
OKLab	oklab(37.71% -0.0131 -0.1424)
OKLCH	oklch(37.71% 0.143 264.7)
XYZ	xyz(6.6211, 5.0385, 25.4294)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A398C #8C6D1A

analogous

#1A728C #1A398C #341A8C

triadic

#1A398C #8C1A39 #398C1A

tetradic

#1A398C #8C1A72 #8C6D1A #1A8C34

square

#1A398C #8C1A72 #8C6D1A #1A8C34

split-complementary

#1A398C #8C341A #728C1A

monochromatic

#070F25 #102458 #1A398C #244EC0 #446DDC

Accessibility & contrast

On white

10.46

#1A398C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1A398C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A398C

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A398C	#FFFFFF	#000000	##FFFFFF
##1A398C	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003A8A

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a398c;
/* rgb */ color: rgb(26, 57, 140);
/* oklch */ color: oklch(37.7% 0.143 264.7);

Tailwind

colors: {
  custom: {
    50: '#6b6eae',
    500: '#1a398c',
    950: '#000000',
  },
}

SCSS

$custom: #1a398c;
$custom-light: #6b6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1a398c",
  "rgb": {
    "r": 26,
    "g": 57,
    "b": 140
  },
  "hsl": {
    "h": 223.684,
    "s": 68.675,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37706,
    "c": 0.14301,
    "h": 264.7
  },
  "luminance": 0.05039
}

Semantic roles & 50–950 ramp

primary

#1A398C

secondary

#BE9D44

accent

#BC3CEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A398C

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

Preview Lab → · Contrast checker → · Palette generator →