#1F436F#1F436F

#1F436F is a dark, moderate cyan. Relative luminance 0.055; OKLCH L 38.0% C 0.086 H 254.8°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1F436F
RGB	rgb(31, 67, 111)
HSL	hsl(213, 56%, 28%)
HSV	hsv(213, 72%, 44%)
CMYK	cmyk(72.1%, 39.6%, 0%, 56.5%)
CIE-LAB	lab(27.99, 3.09, -29.26)
CIE-LCH	lch(27.99, 29.42, 276.03°)
OKLab	oklab(37.98% -0.0226 -0.0832)
OKLCH	oklch(37.98% 0.086 254.8)
XYZ	xyz(5.4404, 5.4527, 15.8016)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F436F #6F4B1F

analogous

#1F6B6F #1F436F #231F6F

triadic

#1F436F #6F1F43 #436F1F

tetradic

#1F436F #6F1F6B #6F4B1F #1F6F23

square

#1F436F #6F1F6B #6F4B1F #1F6F23

split-complementary

#1F436F #6F231F #6B6F1F

monochromatic

#070E18 #12263F #1F436F #2C609F #3F7DC9

Accessibility & contrast

On white

10.04

#1F436F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1F436F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F436F

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F436F	#FFFFFF	#000000	##FFFFFF
##1F436F	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4671

Deuteranopia (green-blind)

#233F6E

Tritanopia (blue-blind)

#004D53

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f436f;
/* rgb */ color: rgb(31, 67, 111);
/* oklch */ color: oklch(38.0% 0.086 254.8);

Tailwind

colors: {
  custom: {
    50: '#657698',
    500: '#1f436f',
    950: '#000000',
  },
}

SCSS

$custom: #1f436f;
$custom-light: #657698;
$custom-dark: #000000;

JSON

{
  "hex": "#1f436f",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 111
  },
  "hsl": {
    "h": 213,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37979,
    "c": 0.08627,
    "h": 254.8
  },
  "luminance": 0.05453
}

Semantic roles & 50–950 ramp

primary

#1F436F

secondary

#A37A47

accent

#9B48E0

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F436F

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

Preview Lab → · Contrast checker → · Palette generator →