#1B3E90#1B3E90

#1B3E90 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.142 H 263.7°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E90
RGB	rgb(27, 62, 144)
HSL	hsl(222, 68%, 34%)
HSV	hsv(222, 81%, 56%)
CMYK	cmyk(81.3%, 56.9%, 0%, 43.5%)
CIE-LAB	lab(28.62, 19.30, -48.87)
CIE-LCH	lch(28.62, 52.55, 291.55°)
OKLab	oklab(39.16% -0.0156 -0.1411)
OKLCH	oklch(39.16% 0.142 263.7)
XYZ	xyz(7.2069, 5.6910, 27.0988)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E90 #906D1B

analogous

#1B7890 #1B3E90 #321B90

triadic

#1B3E90 #901B3E #3E901B

tetradic

#1B3E90 #901B78 #906D1B #1B9032

square

#1B3E90 #901B78 #906D1B #1B9032

split-complementary

#1B3E90 #90321B #78901B

monochromatic

#081229 #11285C #1B3E90 #2554C4 #4975DD

Accessibility & contrast

On white

9.82

#1B3E90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B3E90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E90

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E90	#FFFFFF	#000000	##FFFFFF
##1B3E90	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004993

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3e90;
/* rgb */ color: rgb(27, 62, 144);
/* oklch */ color: oklch(39.2% 0.142 263.7);

Tailwind

colors: {
  custom: {
    50: '#6c72b1',
    500: '#1b3e90',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e90;
$custom-light: #6c72b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e90",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 144
  },
  "hsl": {
    "h": 222.051,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39155,
    "c": 0.14193,
    "h": 263.7
  },
  "luminance": 0.05692
}

Semantic roles & 50–950 ramp

primary

#1B3E90

secondary

#BF9B48

accent

#B73DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3E90

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

Preview Lab → · Contrast checker → · Palette generator →