#1B5C84#1B5C84

#1B5C84 is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.4% C 0.091 H 240.6°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B5C84
RGB	rgb(27, 92, 132)
HSL	hsl(203, 66%, 31%)
HSV	hsv(203, 80%, 52%)
CMYK	cmyk(79.5%, 30.3%, 0%, 48.2%)
CIE-LAB	lab(37.03, -5.47, -28.07)
CIE-LCH	lch(37.03, 28.60, 258.97°)
OKLab	oklab(45.43% -0.0447 -0.0795)
OKLCH	oklch(45.43% 0.091 240.6)
XYZ	xyz(8.4424, 9.5522, 23.2241)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5C84 #84431B

analogous

#1B8477 #1B5C84 #1B2784

triadic

#1B5C84 #841B5C #5C841B

tetradic

#1B5C84 #771B84 #84431B #27841B

square

#1B5C84 #771B84 #84431B #27841B

split-complementary

#1B5C84 #841B27 #84771B

monochromatic

#06151E #113951 #1B5C84 #257FB7 #419FD8

Accessibility & contrast

On white

7.22

#1B5C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1B5C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C84

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5C84	#FFFFFF	#000000	##FFFFFF
##1B5C84	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495D86

Deuteranopia (green-blind)

#3B5383

Tritanopia (blue-blind)

#00666A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5c84;
/* rgb */ color: rgb(27, 92, 132);
/* oklch */ color: oklch(45.4% 0.091 240.6);

Tailwind

colors: {
  custom: {
    50: '#688aa8',
    500: '#1b5c84',
    950: '#000000',
  },
}

SCSS

$custom: #1b5c84;
$custom-light: #688aa8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5c84",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 132
  },
  "hsl": {
    "h": 202.857,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4543,
    "c": 0.09117,
    "h": 240.6
  },
  "luminance": 0.09553
}

Semantic roles & 50–950 ramp

primary

#1B5C84

secondary

#B77043

accent

#803FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5C84

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

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