#1B5789#1B5789

#1B5789 is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.5% C 0.102 H 248.0°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B5789
RGB	rgb(27, 87, 137)
HSL	hsl(207, 67%, 32%)
HSV	hsv(207, 80%, 54%)
CMYK	cmyk(80.3%, 36.5%, 0%, 46.3%)
CIE-LAB	lab(35.70, -0.37, -33.21)
CIE-LCH	lch(35.70, 33.21, 269.36°)
OKLab	oklab(44.47% -0.0382 -0.0945)
OKLCH	oklch(44.47% 0.102 248)
XYZ	xyz(8.3738, 8.8545, 24.9298)
Luminance	0.0886 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5789 #894D1B

analogous

#1B8984 #1B5789 #1B2089

triadic

#1B5789 #891B57 #57891B

tetradic

#1B5789 #841B89 #894D1B #20891B

square

#1B5789 #841B89 #894D1B #20891B

split-complementary

#1B5789 #891B20 #89841B

monochromatic

#071623 #113756 #1B5789 #2577BC #4496DA

Accessibility & contrast

On white

7.58

#1B5789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1B5789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5789

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5789	#FFFFFF	#000000	##FFFFFF
##1B5789	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40598B

Deuteranopia (green-blind)

#304F88

Tritanopia (blue-blind)

#006369

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b5789;
/* rgb */ color: rgb(27, 87, 137);
/* oklch */ color: oklch(44.5% 0.102 248.0);

Tailwind

colors: {
  custom: {
    50: '#6986ac',
    500: '#1b5789',
    950: '#000000',
  },
}

SCSS

$custom: #1b5789;
$custom-light: #6986ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5789",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 137
  },
  "hsl": {
    "h": 207.273,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.44472,
    "c": 0.10196,
    "h": 248
  },
  "luminance": 0.08856
}

Semantic roles & 50–950 ramp

primary

#1B5789

secondary

#BC7A44

accent

#8C3EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1B5789

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

Preview Lab → · Contrast checker → · Palette generator →