#1B559E#1B559E

#1B559E is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.4% C 0.133 H 256.3°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B559E
RGB	rgb(27, 85, 158)
HSL	hsl(213, 71%, 36%)
HSV	hsv(213, 83%, 62%)
CMYK	cmyk(82.9%, 46.2%, 0%, 38%)
CIE-LAB	lab(36.36, 9.32, -44.87)
CIE-LCH	lch(36.36, 45.83, 281.73°)
OKLab	oklab(45.4% -0.0314 -0.1288)
OKLCH	oklch(45.4% 0.133 256.3)
XYZ	xyz(9.8698, 9.1974, 33.5962)
Luminance	0.0920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B559E #9E641B

analogous

#1B979E #1B559E #231B9E

triadic

#1B559E #9E1B55 #559E1B

tetradic

#1B559E #9E1B97 #9E641B #1B9E23

square

#1B559E #9E1B97 #9E641B #1B9E23

split-complementary

#1B559E #9E231B #979E1B

monochromatic

#091D35 #12396A #1B559E #2471D2 #5291E1

Accessibility & contrast

On white

7.39

#1B559E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1B559E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B559E

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B559E	#FFFFFF	#000000	##FFFFFF
##1B559E	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E5CA1

Deuteranopia (green-blind)

#0E509D

Tritanopia (blue-blind)

#006672

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b559e;
/* rgb */ color: rgb(27, 85, 158);
/* oklch */ color: oklch(45.4% 0.133 256.3);

Tailwind

colors: {
  custom: {
    50: '#6e84bb',
    500: '#1b559e',
    950: '#000000',
  },
}

SCSS

$custom: #1b559e;
$custom-light: #6e84bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b559e",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 158
  },
  "hsl": {
    "h": 213.435,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.45398,
    "c": 0.13257,
    "h": 256.3
  },
  "luminance": 0.09199
}

Semantic roles & 50–950 ramp

primary

#1B559E

secondary

#C49151

accent

#9E3AEE

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1B559E

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

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