#1B5891#1B5891

#1B5891 is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.2% C 0.111 H 250.7°. Best body text is #FFFFFF at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B5891
RGB	rgb(27, 88, 145)
HSL	hsl(209, 69%, 34%)
HSV	hsv(209, 81%, 57%)
CMYK	cmyk(81.4%, 39.3%, 0%, 43.1%)
CIE-LAB	lab(36.47, 2.15, -36.85)
CIE-LCH	lch(36.47, 36.92, 273.34°)
OKLab	oklab(45.22% -0.0369 -0.1052)
OKLCH	oklch(45.22% 0.111 250.7)
XYZ	xyz(9.0506, 9.2557, 28.0921)
Luminance	0.0926 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5891 #91541B

analogous

#1B918F #1B5891 #1B1D91

triadic

#1B5891 #911B58 #58911B

tetradic

#1B5891 #8F1B91 #91541B #1D911B

square

#1B5891 #8F1B91 #91541B #1D911B

split-complementary

#1B5891 #911B1D #918F1B

monochromatic

#08192A #11395D #1B5891 #2577C5 #4996DD

Accessibility & contrast

On white

7.36

#1B5891 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#1B5891 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5891

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5891	#FFFFFF	#000000	##FFFFFF
##1B5891	1.00	7.36	2.85	7.36
#FFFFFF	7.36	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5C93

Deuteranopia (green-blind)

#2A5190

Tritanopia (blue-blind)

#00666D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5891;
/* rgb */ color: rgb(27, 88, 145);
/* oklch */ color: oklch(45.2% 0.111 250.7);

Tailwind

colors: {
  custom: {
    50: '#6b86b1',
    500: '#1b5891',
    950: '#000000',
  },
}

SCSS

$custom: #1b5891;
$custom-light: #6b86b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5891",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 145
  },
  "hsl": {
    "h": 208.983,
    "s": 68.605,
    "l": 33.725
  },
  "oklch": {
    "l": 0.45224,
    "c": 0.11148,
    "h": 250.7
  },
  "luminance": 0.09257
}

Semantic roles & 50–950 ramp

primary

#1B5891

secondary

#BF8249

accent

#913CEB

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080B11

muted

#7A7C80

Preview Lab

Preview with #1B5891

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

Preview Lab → · Contrast checker → · Palette generator →