#1F4F77#1F4F77

#1F4F77 is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.5% C 0.085 H 246.9°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F77
RGB	rgb(31, 79, 119)
HSL	hsl(207, 59%, 29%)
HSV	hsv(207, 74%, 47%)
CMYK	cmyk(73.9%, 33.6%, 0%, 53.3%)
CIE-LAB	lab(32.29, -1.71, -27.49)
CIE-LCH	lch(32.29, 27.55, 266.44°)
OKLab	oklab(41.5% -0.0332 -0.0779)
OKLCH	oklch(41.5% 0.085 246.9)
XYZ	xyz(6.6896, 7.2144, 18.4892)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F77 #77471F

analogous

#1F7773 #1F4F77 #1F2377

triadic

#1F4F77 #771F4F #4F771F

tetradic

#1F4F77 #731F77 #77471F #23771F

square

#1F4F77 #731F77 #77471F #23771F

split-complementary

#1F4F77 #771F23 #77731F

monochromatic

#061018 #122F46 #1F4F77 #2C6FA8 #438FCE

Accessibility & contrast

On white

8.60

#1F4F77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#1F4F77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F77

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F77	#FFFFFF	#000000	##FFFFFF
##1F4F77	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5179

Deuteranopia (green-blind)

#314876

Tritanopia (blue-blind)

#00595D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1f4f77;
/* rgb */ color: rgb(31, 79, 119);
/* oklch */ color: oklch(41.5% 0.085 246.9);

Tailwind

colors: {
  custom: {
    50: '#67809e',
    500: '#1f4f77',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f77;
$custom-light: #67809e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f77",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 119
  },
  "hsl": {
    "h": 207.273,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.41499,
    "c": 0.08468,
    "h": 246.9
  },
  "luminance": 0.07215
}

Semantic roles & 50–950 ramp

primary

#1F4F77

secondary

#AB7447

accent

#8D46E2

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4F77

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

Preview Lab → · Contrast checker → · Palette generator →