#1B5984#1B5984

#1B5984 is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.7% C 0.094 H 243.6°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B5984
RGB	rgb(27, 89, 132)
HSL	hsl(205, 66%, 31%)
HSV	hsv(205, 80%, 52%)
CMYK	cmyk(79.5%, 32.6%, 0%, 48.2%)
CIE-LAB	lab(36.07, -3.60, -29.58)
CIE-LCH	lch(36.07, 29.80, 263.06°)
OKLab	oklab(44.67% -0.0417 -0.0839)
OKLCH	oklch(44.67% 0.094 243.6)
XYZ	xyz(8.1876, 9.0427, 23.1392)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5984 #84461B

analogous

#1B847A #1B5984 #1B2584

triadic

#1B5984 #841B59 #59841B

tetradic

#1B5984 #7A1B84 #84461B #25841B

square

#1B5984 #7A1B84 #84461B #25841B

split-complementary

#1B5984 #841B25 #847A1B

monochromatic

#06141E #113751 #1B5984 #257BB7 #419AD8

Accessibility & contrast

On white

7.48

#1B5984 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1B5984 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5984

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5984	#FFFFFF	#000000	##FFFFFF
##1B5984	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455A86

Deuteranopia (green-blind)

#365083

Tritanopia (blue-blind)

#006468

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5984;
/* rgb */ color: rgb(27, 89, 132);
/* oklch */ color: oklch(44.7% 0.094 243.6);

Tailwind

colors: {
  custom: {
    50: '#6887a8',
    500: '#1b5984',
    950: '#000000',
  },
}

SCSS

$custom: #1b5984;
$custom-light: #6887a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5984",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 132
  },
  "hsl": {
    "h": 204.571,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4467,
    "c": 0.09369,
    "h": 243.6
  },
  "luminance": 0.09044
}

Semantic roles & 50–950 ramp

primary

#1B5984

secondary

#B77343

accent

#853FE9

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5984

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

Preview Lab → · Contrast checker → · Palette generator →