#1F4E71#1F4E71

#1F4E71 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.9% C 0.078 H 244.0°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E71
RGB	rgb(31, 78, 113)
HSL	hsl(206, 57%, 28%)
HSV	hsv(206, 73%, 44%)
CMYK	cmyk(72.6%, 31%, 0%, 55.7%)
CIE-LAB	lab(31.65, -3.37, -24.74)
CIE-LCH	lch(31.65, 24.97, 262.24°)
OKLab	oklab(40.89% -0.0341 -0.0699)
OKLCH	oklch(40.89% 0.078 244)
XYZ	xyz(6.2690, 6.9317, 16.6271)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E71 #71421F

analogous

#1F716B #1F4E71 #1F2571

triadic

#1F4E71 #711F4E #4E711F

tetradic

#1F4E71 #6B1F71 #71421F #25711F

square

#1F4E71 #6B1F71 #71421F #25711F

split-complementary

#1F4E71 #711F25 #716B1F

monochromatic

#071118 #122D41 #1F4E71 #2C6FA1 #408FCB

Accessibility & contrast

On white

8.80

#1F4E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1F4E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E71

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E71	#FFFFFF	#000000	##FFFFFF
##1F4E71	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E4F73

Deuteranopia (green-blind)

#334770

Tritanopia (blue-blind)

#00575A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4e71;
/* rgb */ color: rgb(31, 78, 113);
/* oklch */ color: oklch(40.9% 0.078 244.0);

Tailwind

colors: {
  custom: {
    50: '#667f9a',
    500: '#1f4e71',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e71;
$custom-light: #667f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e71",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 113
  },
  "hsl": {
    "h": 205.61,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.40891,
    "c": 0.07779,
    "h": 244
  },
  "luminance": 0.06932
}

Semantic roles & 50–950 ramp

primary

#1F4E71

secondary

#A56F47

accent

#8948E0

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4E71

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

Preview Lab → · Contrast checker → · Palette generator →