#1F4F73#1F4F73

#1F4F73 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.3% C 0.079 H 244.3°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F73
RGB	rgb(31, 79, 115)
HSL	hsl(206, 58%, 29%)
HSV	hsv(206, 73%, 45%)
CMYK	cmyk(73%, 31.3%, 0%, 54.9%)
CIE-LAB	lab(32.08, -3.25, -25.33)
CIE-LCH	lch(32.08, 25.53, 262.69°)
OKLab	oklab(41.26% -0.0345 -0.0716)
OKLCH	oklch(41.26% 0.079 244.3)
XYZ	xyz(6.4544, 7.1204, 17.2505)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F73 #73431F

analogous

#1F736D #1F4F73 #1F2573

triadic

#1F4F73 #731F4F #4F731F

tetradic

#1F4F73 #6D1F73 #73431F #25731F

square

#1F4F73 #6D1F73 #73431F #25731F

split-complementary

#1F4F73 #731F25 #736D1F

monochromatic

#061118 #122E43 #1F4F73 #2C70A3 #4190CC

Accessibility & contrast

On white

8.66

#1F4F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1F4F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F73

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F73	#FFFFFF	#000000	##FFFFFF
##1F4F73	1.00	8.66	2.42	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5075

Deuteranopia (green-blind)

#334872

Tritanopia (blue-blind)

#00585C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4f73;
/* rgb */ color: rgb(31, 79, 115);
/* oklch */ color: oklch(41.3% 0.079 244.3);

Tailwind

colors: {
  custom: {
    50: '#66809b',
    500: '#1f4f73',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f73;
$custom-light: #66809b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f73",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 115
  },
  "hsl": {
    "h": 205.714,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.41263,
    "c": 0.07949,
    "h": 244.3
  },
  "luminance": 0.07121
}

Semantic roles & 50–950 ramp

primary

#1F4F73

secondary

#A77047

accent

#8947E1

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4F73

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

Preview Lab → · Contrast checker → · Palette generator →