#1B4E64#1B4E64

#1B4E64 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.0% C 0.065 H 230.1°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E64
RGB	rgb(27, 78, 100)
HSL	hsl(198, 57%, 25%)
HSV	hsv(198, 73%, 39%)
CMYK	cmyk(73%, 22%, 0%, 60.8%)
CIE-LAB	lab(30.88, -8.97, -17.75)
CIE-LCH	lch(30.88, 19.89, 243.20°)
OKLab	oklab(40.03% -0.0416 -0.0498)
OKLCH	oklch(40.03% 0.065 230.1)
XYZ	xyz(5.4757, 6.6013, 13.0397)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E64 #64311B

analogous

#1B6455 #1B4E64 #1B2A64

triadic

#1B4E64 #641B4E #4E641B

tetradic

#1B4E64 #551B64 #64311B #2A641B

square

#1B4E64 #551B64 #64311B #2A641B

split-complementary

#1B4E64 #641B2A #64551B

monochromatic

#071318 #0E2834 #1B4E64 #287494 #3599C4

Accessibility & contrast

On white

9.05

#1B4E64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1B4E64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E64

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E64	#FFFFFF	#000000	##FFFFFF
##1B4E64	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434D65

Deuteranopia (green-blind)

#394564

Tritanopia (blue-blind)

#005455

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4e64;
/* rgb */ color: rgb(27, 78, 100);
/* oklch */ color: oklch(40.0% 0.065 230.1);

Tailwind

colors: {
  custom: {
    50: '#627f90',
    500: '#1b4e64',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e64;
$custom-light: #627f90;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e64",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 100
  },
  "hsl": {
    "h": 198.082,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.40033,
    "c": 0.06487,
    "h": 230.1
  },
  "luminance": 0.06602
}

Semantic roles & 50–950 ramp

primary

#1B4E64

secondary

#995C41

accent

#7547E1

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #1B4E64

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

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