#1B5479#1B5479

#1B5479 is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.8% C 0.084 H 241.5°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B5479
RGB	rgb(27, 84, 121)
HSL	hsl(204, 64%, 29%)
HSV	hsv(204, 78%, 47%)
CMYK	cmyk(77.7%, 30.6%, 0%, 52.5%)
CIE-LAB	lab(33.89, -4.72, -26.24)
CIE-LCH	lch(33.89, 26.66, 259.80°)
OKLab	oklab(42.76% -0.0403 -0.0742)
OKLCH	oklch(42.76% 0.084 241.5)
XYZ	xyz(7.0722, 7.9533, 19.2479)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5479 #79401B

analogous

#1B796F #1B5479 #1B2579

triadic

#1B5479 #791B54 #54791B

tetradic

#1B5479 #6F1B79 #79401B #25791B

square

#1B5479 #6F1B79 #79401B #25791B

split-complementary

#1B5479 #791B25 #796F1B

monochromatic

#061119 #103147 #1B5479 #2677AB #3B97D3

Accessibility & contrast

On white

8.11

#1B5479 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1B5479 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5479

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5479	#FFFFFF	#000000	##FFFFFF
##1B5479	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43557B

Deuteranopia (green-blind)

#364C78

Tritanopia (blue-blind)

#005D61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b5479;
/* rgb */ color: rgb(27, 84, 121);
/* oklch */ color: oklch(42.8% 0.084 241.5);

Tailwind

colors: {
  custom: {
    50: '#6684a0',
    500: '#1b5479',
    950: '#000000',
  },
}

SCSS

$custom: #1b5479;
$custom-light: #6684a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5479",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 121
  },
  "hsl": {
    "h": 203.617,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.42757,
    "c": 0.08446,
    "h": 241.5
  },
  "luminance": 0.07954
}

Semantic roles & 50–950 ramp

primary

#1B5479

secondary

#AD6D43

accent

#8241E7

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B5479

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

Preview Lab → · Contrast checker → · Palette generator →