#1A3F90#1A3F90

#1A3F90 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.3% C 0.141 H 263.0°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F90
RGB	rgb(26, 63, 144)
HSL	hsl(221, 69%, 33%)
HSV	hsv(221, 82%, 56%)
CMYK	cmyk(81.9%, 56.3%, 0%, 43.5%)
CIE-LAB	lab(28.87, 18.51, -48.47)
CIE-LCH	lch(28.87, 51.88, 290.90°)
OKLab	oklab(39.33% -0.0171 -0.1399)
OKLCH	oklch(39.33% 0.141 263)
XYZ	xyz(7.2357, 5.7874, 27.1159)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F90 #906B1A

analogous

#1A7A90 #1A3F90 #301A90

triadic

#1A3F90 #901A3F #3F901A

tetradic

#1A3F90 #901A7A #906B1A #1A9030

square

#1A3F90 #901A7A #906B1A #1A9030

split-complementary

#1A3F90 #90301A #7A901A

monochromatic

#071228 #11285C #1A3F90 #2356C4 #4776DE

Accessibility & contrast

On white

9.73

#1A3F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1A3F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F90

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F90	#FFFFFF	#000000	##FFFFFF
##1A3F90	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A93

Deuteranopia (green-blind)

#003F8E

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1a3f90;
/* rgb */ color: rgb(26, 63, 144);
/* oklch */ color: oklch(39.3% 0.141 263.0);

Tailwind

colors: {
  custom: {
    50: '#6b73b1',
    500: '#1a3f90',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f90;
$custom-light: #6b73b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f90",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 144
  },
  "hsl": {
    "h": 221.186,
    "s": 69.412,
    "l": 33.333
  },
  "oklch": {
    "l": 0.39334,
    "c": 0.14091,
    "h": 263
  },
  "luminance": 0.05788
}

Semantic roles & 50–950 ramp

primary

#1A3F90

secondary

#BF9947

accent

#B53CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1A3F90

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

Preview Lab → · Contrast checker → · Palette generator →