#1B5978#1B5978

#1B5978 is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.0% C 0.080 H 234.9°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B5978
RGB	rgb(27, 89, 120)
HSL	hsl(200, 63%, 29%)
HSV	hsv(200, 78%, 47%)
CMYK	cmyk(77.5%, 25.8%, 0%, 52.9%)
CIE-LAB	lab(35.47, -8.20, -23.15)
CIE-LCH	lch(35.47, 24.56, 250.49°)
OKLab	oklab(44% -0.0459 -0.0652)
OKLCH	oklch(44% 0.08 234.9)
XYZ	xyz(7.4132, 8.7330, 19.0606)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5978 #783A1B

analogous

#1B7869 #1B5978 #1B2B78

triadic

#1B5978 #781B59 #59781B

tetradic

#1B5978 #691B78 #783A1B #2B781B

square

#1B5978 #691B78 #783A1B #2B781B

split-complementary

#1B5978 #781B2B #78691B

monochromatic

#061319 #103446 #1B5978 #267EAA #3BA0D3

Accessibility & contrast

On white

7.65

#1B5978 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1B5978 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5978

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5978	#FFFFFF	#000000	##FFFFFF
##1B5978	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5879

Deuteranopia (green-blind)

#3D4F77

Tritanopia (blue-blind)

#006164

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b5978;
/* rgb */ color: rgb(27, 89, 120);
/* oklch */ color: oklch(44.0% 0.080 234.9);

Tailwind

colors: {
  custom: {
    50: '#66879f',
    500: '#1b5978',
    950: '#000000',
  },
}

SCSS

$custom: #1b5978;
$custom-light: #66879f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5978",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 120
  },
  "hsl": {
    "h": 200,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.43995,
    "c": 0.07974,
    "h": 234.9
  },
  "luminance": 0.08734
}

Semantic roles & 50–950 ramp

primary

#1B5978

secondary

#AC6643

accent

#7841E6

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1B5978

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

Preview Lab → · Contrast checker → · Palette generator →