#1B5C90#1B5C90

#1B5C90 is a mid, moderate cyan. Relative luminance 0.099; OKLCH L 46.1% C 0.106 H 247.3°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B5C90
RGB	rgb(27, 92, 144)
HSL	hsl(207, 68%, 34%)
HSV	hsv(207, 81%, 56%)
CMYK	cmyk(81.3%, 36.1%, 0%, 43.5%)
CIE-LAB	lab(37.66, -0.81, -34.36)
CIE-LCH	lch(37.66, 34.37, 268.65°)
OKLab	oklab(46.14% -0.0409 -0.0978)
OKLCH	oklch(46.14% 0.106 247.3)
XYZ	xyz(9.3112, 9.8998, 27.8003)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5C90 #904F1B

analogous

#1B9089 #1B5C90 #1B2190

triadic

#1B5C90 #901B5C #5C901B

tetradic

#1B5C90 #891B90 #904F1B #21901B

square

#1B5C90 #891B90 #904F1B #21901B

split-complementary

#1B5C90 #901B21 #90891B

monochromatic

#081A29 #113B5C #1B5C90 #257DC4 #499BDD

Accessibility & contrast

On white

7.05

#1B5C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#1B5C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C90

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5C90	#FFFFFF	#000000	##FFFFFF
##1B5C90	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445E92

Deuteranopia (green-blind)

#33548F

Tritanopia (blue-blind)

#00696F

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5c90;
/* rgb */ color: rgb(27, 92, 144);
/* oklch */ color: oklch(46.1% 0.106 247.3);

Tailwind

colors: {
  custom: {
    50: '#6b89b1',
    500: '#1b5c90',
    950: '#000000',
  },
}

SCSS

$custom: #1b5c90;
$custom-light: #6b89b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5c90",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 144
  },
  "hsl": {
    "h": 206.667,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.46139,
    "c": 0.10602,
    "h": 247.3
  },
  "luminance": 0.09901
}

Semantic roles & 50–950 ramp

primary

#1B5C90

secondary

#BF7D48

accent

#8A3DEB

background

#F6F8FA

surface

#ECF0F5

border

#C7CBCF

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B5C90

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

Preview Lab → · Contrast checker → · Palette generator →