#1B5A84#1B5A84

#1B5A84 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.9% C 0.093 H 242.6°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A84
RGB	rgb(27, 90, 132)
HSL	hsl(204, 66%, 31%)
HSV	hsv(204, 80%, 52%)
CMYK	cmyk(79.5%, 31.8%, 0%, 48.2%)
CIE-LAB	lab(36.39, -4.23, -29.08)
CIE-LCH	lch(36.39, 29.38, 261.73°)
OKLab	oklab(44.92% -0.0427 -0.0824)
OKLCH	oklch(44.92% 0.093 242.6)
XYZ	xyz(8.2714, 9.2103, 23.1672)
Luminance	0.0921 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A84 #84451B

analogous

#1B8479 #1B5A84 #1B2584

triadic

#1B5A84 #841B5A #5A841B

tetradic

#1B5A84 #791B84 #84451B #25841B

square

#1B5A84 #791B84 #84451B #25841B

split-complementary

#1B5A84 #841B25 #84791B

monochromatic

#06151E #113751 #1B5A84 #257DB7 #419CD8

Accessibility & contrast

On white

7.39

#1B5A84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1B5A84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A84

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A84	#FFFFFF	#000000	##FFFFFF
##1B5A84	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)

#465B86

Deuteranopia (green-blind)

#385183

Tritanopia (blue-blind)

#006469

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5a84;
/* rgb */ color: rgb(27, 90, 132);
/* oklch */ color: oklch(44.9% 0.093 242.6);

Tailwind

colors: {
  custom: {
    50: '#6888a8',
    500: '#1b5a84',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a84;
$custom-light: #6888a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a84",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 132
  },
  "hsl": {
    "h": 204,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.44922,
    "c": 0.09282,
    "h": 242.6
  },
  "luminance": 0.09211
}

Semantic roles & 50–950 ramp

primary

#1B5A84

secondary

#B77243

accent

#833FE9

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5A84

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

Preview Lab → · Contrast checker → · Palette generator →