#1B5790#1B5790

#1B5790 is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.9% C 0.111 H 251.0°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B5790
RGB	rgb(27, 87, 144)
HSL	hsl(209, 68%, 34%)
HSV	hsv(209, 81%, 56%)
CMYK	cmyk(81.3%, 39.6%, 0%, 43.5%)
CIE-LAB	lab(36.10, 2.40, -36.83)
CIE-LCH	lch(36.10, 36.91, 273.73°)
OKLab	oklab(44.92% -0.0363 -0.1051)
OKLCH	oklch(44.92% 0.111 251)
XYZ	xyz(8.8923, 9.0619, 27.6606)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5790 #90541B

analogous

#1B908E #1B5790 #1B1C90

triadic

#1B5790 #901B57 #57901B

tetradic

#1B5790 #8E1B90 #90541B #1C901B

square

#1B5790 #8E1B90 #90541B #1C901B

split-complementary

#1B5790 #901B1C #908E1B

monochromatic

#081929 #11385C #1B5790 #2576C4 #4995DD

Accessibility & contrast

On white

7.47

#1B5790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1B5790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5790

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5790	#FFFFFF	#000000	##FFFFFF
##1B5790	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5B92

Deuteranopia (green-blind)

#29508F

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5790;
/* rgb */ color: rgb(27, 87, 144);
/* oklch */ color: oklch(44.9% 0.111 251.0);

Tailwind

colors: {
  custom: {
    50: '#6b86b1',
    500: '#1b5790',
    950: '#000000',
  },
}

SCSS

$custom: #1b5790;
$custom-light: #6b86b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5790",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 144
  },
  "hsl": {
    "h": 209.231,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.44916,
    "c": 0.11123,
    "h": 251
  },
  "luminance": 0.09063
}

Semantic roles & 50–950 ramp

primary

#1B5790

secondary

#BF8248

accent

#923DEB

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B5790

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

Preview Lab → · Contrast checker → · Palette generator →