#1F4E64#1F4E64

#1F4E64 is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.2% C 0.063 H 231.6°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E64
RGB	rgb(31, 78, 100)
HSL	hsl(199, 53%, 26%)
HSV	hsv(199, 69%, 39%)
CMYK	cmyk(69%, 22%, 0%, 60.8%)
CIE-LAB	lab(31.02, -8.24, -17.53)
CIE-LCH	lch(31.02, 19.37, 244.83°)
OKLab	oklab(40.18% -0.039 -0.0491)
OKLCH	oklch(40.18% 0.063 231.6)
XYZ	xyz(5.5888, 6.6596, 13.0450)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E64 #64351F

analogous

#1F6457 #1F4E64 #1F2B64

triadic

#1F4E64 #641F4E #4E641F

tetradic

#1F4E64 #571F64 #64351F #2B641F

square

#1F4E64 #571F64 #64351F #2B641F

split-complementary

#1F4E64 #641F2B #64571F

monochromatic

#071217 #112A35 #1F4E64 #2D7293 #3C97C1

Accessibility & contrast

On white

9.01

#1F4E64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F4E64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E64

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E64	#FFFFFF	#000000	##FFFFFF
##1F4E64	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434D65

Deuteranopia (green-blind)

#394664

Tritanopia (blue-blind)

#005455

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f4e64;
/* rgb */ color: rgb(31, 78, 100);
/* oklch */ color: oklch(40.2% 0.063 231.6);

Tailwind

colors: {
  custom: {
    50: '#637f90',
    500: '#1f4e64',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e64;
$custom-light: #637f90;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e64",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 100
  },
  "hsl": {
    "h": 199.13,
    "s": 52.672,
    "l": 25.686
  },
  "oklch": {
    "l": 0.40182,
    "c": 0.06266,
    "h": 231.6
  },
  "luminance": 0.0666
}

Semantic roles & 50–950 ramp

primary

#1F4E64

secondary

#986146

accent

#7A4CDC

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #1F4E64

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

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