#1B4983#1B4983

#1B4983 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.7% C 0.109 H 255.9°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B4983
RGB	rgb(27, 73, 131)
HSL	hsl(213, 66%, 31%)
HSV	hsv(213, 79%, 51%)
CMYK	cmyk(79.4%, 44.3%, 0%, 48.6%)
CIE-LAB	lab(30.96, 6.45, -37.07)
CIE-LCH	lch(30.96, 37.62, 279.87°)
OKLab	oklab(40.65% -0.0266 -0.1061)
OKLCH	oklch(40.65% 0.109 255.9)
XYZ	xyz(6.9298, 6.6360, 22.3840)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4983 #83551B

analogous

#1B7D83 #1B4983 #211B83

triadic

#1B4983 #831B49 #49831B

tetradic

#1B4983 #831B7D #83551B #1B8321

square

#1B4983 #831B7D #83551B #1B8321

split-complementary

#1B4983 #83211B #7D831B

monochromatic

#06101E #112D50 #1B4983 #2565B6 #4183D8

Accessibility & contrast

On white

9.02

#1B4983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4983

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4983	#FFFFFF	#000000	##FFFFFF
##1B4983	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4E85

Deuteranopia (green-blind)

#194482

Tritanopia (blue-blind)

#00575F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4983;
/* rgb */ color: rgb(27, 73, 131);
/* oklch */ color: oklch(40.7% 0.109 255.9);

Tailwind

colors: {
  custom: {
    50: '#687ba7',
    500: '#1b4983',
    950: '#000000',
  },
}

SCSS

$custom: #1b4983;
$custom-light: #687ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4983",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 131
  },
  "hsl": {
    "h": 213.462,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40653,
    "c": 0.1094,
    "h": 255.9
  },
  "luminance": 0.06637
}

Semantic roles & 50–950 ramp

primary

#1B4983

secondary

#B68443

accent

#9E3FE9

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1B4983

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

Preview Lab → · Contrast checker → · Palette generator →