#1B4085#1B4085

#1B4085 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.7% C 0.124 H 261.5°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#1B4085
RGB	rgb(27, 64, 133)
HSL	hsl(219, 66%, 31%)
HSV	hsv(219, 80%, 52%)
CMYK	cmyk(79.7%, 51.9%, 0%, 47.8%)
CIE-LAB	lab(28.36, 13.45, -42.49)
CIE-LCH	lch(28.36, 44.57, 287.56°)
OKLab	oklab(38.69% -0.0184 -0.1222)
OKLCH	oklch(38.69% 0.124 261.5)
XYZ	xyz(6.5175, 5.5925, 22.9217)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4085 #85601B

analogous

#1B7585 #1B4085 #2B1B85

triadic

#1B4085 #851B40 #40851B

tetradic

#1B4085 #851B75 #85601B #1B852B

square

#1B4085 #851B75 #85601B #1B852B

split-complementary

#1B4085 #852B1B #75851B

monochromatic

#060F1F #112852 #1B4085 #2558B8 #4276D9

Accessibility & contrast

On white

9.91

#1B4085 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1B4085 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4085

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4085	#FFFFFF	#000000	##FFFFFF
##1B4085	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154888

Deuteranopia (green-blind)

#003E84

Tritanopia (blue-blind)

#00515C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b4085;
/* rgb */ color: rgb(27, 64, 133);
/* oklch */ color: oklch(38.7% 0.124 261.5);

Tailwind

colors: {
  custom: {
    50: '#6974a9',
    500: '#1b4085',
    950: '#000000',
  },
}

SCSS

$custom: #1b4085;
$custom-light: #6974a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4085",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 133
  },
  "hsl": {
    "h": 219.057,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38692,
    "c": 0.12362,
    "h": 261.5
  },
  "luminance": 0.05593
}

Semantic roles & 50–950 ramp

primary

#1B4085

secondary

#B89044

accent

#AE3FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4085

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

Preview Lab → · Contrast checker → · Palette generator →