#1F436B#1F436B

#1F436B is a dark, moderate cyan. Relative luminance 0.054; OKLCH L 37.7% C 0.080 H 252.8°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F436B
RGB	rgb(31, 67, 107)
HSL	hsl(212, 55%, 27%)
HSV	hsv(212, 71%, 42%)
CMYK	cmyk(71%, 37.4%, 0%, 58%)
CIE-LAB	lab(27.75, 1.52, -27.09)
CIE-LCH	lch(27.75, 27.13, 273.21°)
OKLab	oklab(37.72% -0.0238 -0.0769)
OKLCH	oklch(37.72% 0.08 252.8)
XYZ	xyz(5.2251, 5.3666, 14.6676)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F436B #6B471F

analogous

#1F696B #1F436B #211F6B

triadic

#1F436B #6B1F43 #436B1F

tetradic

#1F436B #6B1F69 #6B471F #1F6B21

square

#1F436B #6B1F69 #6B471F #1F6B21

split-complementary

#1F436B #6B211F #696B1F

monochromatic

#070F18 #11253C #1F436B #2D619A #3D7FC7

Accessibility & contrast

On white

10.13

#1F436B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1F436B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F436B

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F436B	#FFFFFF	#000000	##FFFFFF
##1F436B	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31456D

Deuteranopia (green-blind)

#263E6A

Tritanopia (blue-blind)

#004C52

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f436b;
/* rgb */ color: rgb(31, 67, 107);
/* oklch */ color: oklch(37.7% 0.080 252.8);

Tailwind

colors: {
  custom: {
    50: '#647695',
    500: '#1f436b',
    950: '#000000',
  },
}

SCSS

$custom: #1f436b;
$custom-light: #647695;
$custom-dark: #000000;

JSON

{
  "hex": "#1f436b",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 107
  },
  "hsl": {
    "h": 211.579,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.37721,
    "c": 0.08047,
    "h": 252.8
  },
  "luminance": 0.05367
}

Semantic roles & 50–950 ramp

primary

#1F436B

secondary

#9F7547

accent

#9849DE

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1F436B

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

Preview Lab → · Contrast checker → · Palette generator →