#1F4D71#1F4D71

#1F4D71 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.6% C 0.079 H 245.2°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F4D71
RGB	rgb(31, 77, 113)
HSL	hsl(206, 57%, 28%)
HSV	hsv(206, 73%, 44%)
CMYK	cmyk(72.6%, 31.9%, 0%, 55.7%)
CIE-LAB	lab(31.33, -2.73, -25.26)
CIE-LCH	lch(31.33, 25.40, 263.83°)
OKLab	oklab(40.63% -0.033 -0.0714)
OKLCH	oklch(40.63% 0.079 245.2)
XYZ	xyz(6.1985, 6.7906, 16.6036)
Luminance	0.0679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4D71 #71431F

analogous

#1F716C #1F4D71 #1F2471

triadic

#1F4D71 #711F4D #4D711F

tetradic

#1F4D71 #6C1F71 #71431F #24711F

square

#1F4D71 #6C1F71 #71431F #24711F

split-complementary

#1F4D71 #711F24 #716C1F

monochromatic

#071018 #122C41 #1F4D71 #2C6EA1 #408ECB

Accessibility & contrast

On white

8.91

#1F4D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1F4D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4D71

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4D71	#FFFFFF	#000000	##FFFFFF
##1F4D71	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4E73

Deuteranopia (green-blind)

#314670

Tritanopia (blue-blind)

#00565A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4d71;
/* rgb */ color: rgb(31, 77, 113);
/* oklch */ color: oklch(40.6% 0.079 245.2);

Tailwind

colors: {
  custom: {
    50: '#667e9a',
    500: '#1f4d71',
    950: '#000000',
  },
}

SCSS

$custom: #1f4d71;
$custom-light: #667e9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4d71",
  "rgb": {
    "r": 31,
    "g": 77,
    "b": 113
  },
  "hsl": {
    "h": 206.341,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.40634,
    "c": 0.07867,
    "h": 245.2
  },
  "luminance": 0.06791
}

Semantic roles & 50–950 ramp

primary

#1F4D71

secondary

#A57047

accent

#8B48E0

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4D71

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

Preview Lab → · Contrast checker → · Palette generator →