#1B3E87#1B3E87

#1B3E87 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.129 H 262.7°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E87
RGB	rgb(27, 62, 135)
HSL	hsl(221, 67%, 32%)
HSV	hsv(221, 80%, 53%)
CMYK	cmyk(80%, 54.1%, 0%, 47.1%)
CIE-LAB	lab(27.92, 15.65, -44.45)
CIE-LCH	lch(27.92, 47.13, 289.40°)
OKLab	oklab(38.4% -0.0165 -0.128)
OKLCH	oklch(38.4% 0.129 262.7)
XYZ	xyz(6.5462, 5.4268, 23.6194)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E87 #87641B

analogous

#1B7487 #1B3E87 #2E1B87

triadic

#1B3E87 #871B3E #3E871B

tetradic

#1B3E87 #871B74 #87641B #1B872E

square

#1B3E87 #871B74 #87641B #1B872E

split-complementary

#1B3E87 #872E1B #74871B

monochromatic

#070F21 #112754 #1B3E87 #2555BA #4374D9

Accessibility & contrast

On white

10.07

#1B3E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1B3E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E87

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E87	#FFFFFF	#000000	##FFFFFF
##1B3E87	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09478A

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b3e87;
/* rgb */ color: rgb(27, 62, 135);
/* oklch */ color: oklch(38.4% 0.129 262.7);

Tailwind

colors: {
  custom: {
    50: '#6972ab',
    500: '#1b3e87',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e87;
$custom-light: #6972ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e87",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 135
  },
  "hsl": {
    "h": 220.556,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38402,
    "c": 0.12911,
    "h": 262.7
  },
  "luminance": 0.05428
}

Semantic roles & 50–950 ramp

primary

#1B3E87

secondary

#BA9444

accent

#B23EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B3E87

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

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