#1F4571#1F4571

#1F4571 is a dark, moderate cyan. Relative luminance 0.057; OKLCH L 38.6% C 0.087 H 253.8°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F4571
RGB	rgb(31, 69, 113)
HSL	hsl(212, 57%, 28%)
HSV	hsv(212, 73%, 44%)
CMYK	cmyk(72.6%, 38.9%, 0%, 55.7%)
CIE-LAB	lab(28.74, 2.53, -29.33)
CIE-LCH	lch(28.74, 29.44, 274.94°)
OKLab	oklab(38.61% -0.0243 -0.0834)
OKLCH	oklch(38.61% 0.087 253.8)
XYZ	xyz(5.6727, 5.7392, 16.4284)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4571 #714B1F

analogous

#1F6E71 #1F4571 #221F71

triadic

#1F4571 #711F45 #45711F

tetradic

#1F4571 #711F6E #714B1F #1F7122

square

#1F4571 #711F6E #714B1F #1F7122

split-complementary

#1F4571 #71221F #6E711F

monochromatic

#070F18 #122841 #1F4571 #2C62A1 #4080CB

Accessibility & contrast

On white

9.78

#1F4571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1F4571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4571

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4571	#FFFFFF	#000000	##FFFFFF
##1F4571	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314873

Deuteranopia (green-blind)

#254070

Tritanopia (blue-blind)

#004F55

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f4571;
/* rgb */ color: rgb(31, 69, 113);
/* oklch */ color: oklch(38.6% 0.087 253.8);

Tailwind

colors: {
  custom: {
    50: '#65789a',
    500: '#1f4571',
    950: '#000000',
  },
}

SCSS

$custom: #1f4571;
$custom-light: #65789a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4571",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 113
  },
  "hsl": {
    "h": 212.195,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.38608,
    "c": 0.08687,
    "h": 253.8
  },
  "luminance": 0.0574
}

Semantic roles & 50–950 ramp

primary

#1F4571

secondary

#A57947

accent

#9948E0

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4571

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

Preview Lab → · Contrast checker → · Palette generator →