#1B4487#1B4487

#1B4487 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.8% C 0.121 H 259.8°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B4487
RGB	rgb(27, 68, 135)
HSL	hsl(217, 67%, 32%)
HSV	hsv(217, 80%, 53%)
CMYK	cmyk(80%, 49.6%, 0%, 47.1%)
CIE-LAB	lab(29.70, 11.49, -41.57)
CIE-LCH	lch(29.70, 43.13, 285.46°)
OKLab	oklab(39.77% -0.0214 -0.1194)
OKLCH	oklch(39.77% 0.121 259.8)
XYZ	xyz(6.8907, 6.1157, 23.7343)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4487 #875E1B

analogous

#1B7A87 #1B4487 #281B87

triadic

#1B4487 #871B44 #44871B

tetradic

#1B4487 #871B7A #875E1B #1B8728

square

#1B4487 #871B7A #875E1B #1B8728

split-complementary

#1B4487 #87281B #7A871B

monochromatic

#071121 #112A54 #1B4487 #255EBA #437CD9

Accessibility & contrast

On white

9.44

#1B4487 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1B4487 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4487

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4487	#FFFFFF	#000000	##FFFFFF
##1B4487	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4B89

Deuteranopia (green-blind)

#004186

Tritanopia (blue-blind)

#00545F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4487;
/* rgb */ color: rgb(27, 68, 135);
/* oklch */ color: oklch(39.8% 0.121 259.8);

Tailwind

colors: {
  custom: {
    50: '#6977aa',
    500: '#1b4487',
    950: '#000000',
  },
}

SCSS

$custom: #1b4487;
$custom-light: #6977aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4487",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 135
  },
  "hsl": {
    "h": 217.222,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.39766,
    "c": 0.12136,
    "h": 259.8
  },
  "luminance": 0.06117
}

Semantic roles & 50–950 ramp

primary

#1B4487

secondary

#BA8D44

accent

#A93EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4487

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

Preview Lab → · Contrast checker → · Palette generator →