#1B4087#1B4087

#1B4087 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.127 H 261.8°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B4087
RGB	rgb(27, 64, 135)
HSL	hsl(219, 67%, 32%)
HSV	hsv(219, 80%, 53%)
CMYK	cmyk(80%, 52.6%, 0%, 47.1%)
CIE-LAB	lab(28.51, 14.26, -43.50)
CIE-LCH	lch(28.51, 45.78, 288.15°)
OKLab	oklab(38.85% -0.0181 -0.1252)
OKLCH	oklch(38.85% 0.127 261.8)
XYZ	xyz(6.6570, 5.6483, 23.6564)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4087 #87621B

analogous

#1B7687 #1B4087 #2C1B87

triadic

#1B4087 #871B40 #40871B

tetradic

#1B4087 #871B76 #87621B #1B872C

square

#1B4087 #871B76 #87621B #1B872C

split-complementary

#1B4087 #872C1B #76871B

monochromatic

#071021 #112854 #1B4087 #2558BA #4377D9

Accessibility & contrast

On white

9.86

#1B4087 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1B4087 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4087

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4087	#FFFFFF	#000000	##FFFFFF
##1B4087	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12488A

Deuteranopia (green-blind)

#003F86

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4087;
/* rgb */ color: rgb(27, 64, 135);
/* oklch */ color: oklch(38.9% 0.127 261.8);

Tailwind

colors: {
  custom: {
    50: '#6974aa',
    500: '#1b4087',
    950: '#000000',
  },
}

SCSS

$custom: #1b4087;
$custom-light: #6974aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4087",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 135
  },
  "hsl": {
    "h": 219.444,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38851,
    "c": 0.12651,
    "h": 261.8
  },
  "luminance": 0.05649
}

Semantic roles & 50–950 ramp

primary

#1B4087

secondary

#BA9244

accent

#AF3EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4087

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

Preview Lab → · Contrast checker → · Palette generator →