#1B4485#1B4485

#1B4485 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.6% C 0.118 H 259.4°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B4485
RGB	rgb(27, 68, 133)
HSL	hsl(217, 66%, 31%)
HSV	hsv(217, 80%, 52%)
CMYK	cmyk(79.7%, 48.9%, 0%, 47.8%)
CIE-LAB	lab(29.56, 10.68, -40.55)
CIE-LCH	lch(29.56, 41.94, 284.75°)
OKLab	oklab(39.61% -0.0218 -0.1165)
OKLCH	oklch(39.61% 0.118 259.4)
XYZ	xyz(6.7512, 6.0599, 22.9996)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4485 #855C1B

analogous

#1B7985 #1B4485 #271B85

triadic

#1B4485 #851B44 #44851B

tetradic

#1B4485 #851B79 #855C1B #1B8527

square

#1B4485 #851B79 #855C1B #1B8527

split-complementary

#1B4485 #85271B #79851B

monochromatic

#06101F #112A52 #1B4485 #255EB8 #427CD9

Accessibility & contrast

On white

9.49

#1B4485 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1B4485 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4485

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4485	#FFFFFF	#000000	##FFFFFF
##1B4485	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204B87

Deuteranopia (green-blind)

#014184

Tritanopia (blue-blind)

#00535E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4485;
/* rgb */ color: rgb(27, 68, 133);
/* oklch */ color: oklch(39.6% 0.118 259.4);

Tailwind

colors: {
  custom: {
    50: '#6977a9',
    500: '#1b4485',
    950: '#000000',
  },
}

SCSS

$custom: #1b4485;
$custom-light: #6977a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4485",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 133
  },
  "hsl": {
    "h": 216.792,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.39614,
    "c": 0.11848,
    "h": 259.4
  },
  "luminance": 0.06061
}

Semantic roles & 50–950 ramp

primary

#1B4485

secondary

#B88B44

accent

#A73FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4485

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

Preview Lab → · Contrast checker → · Palette generator →