#1F4471#1F4471

#1F4471 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.4% C 0.088 H 254.7°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F4471
RGB	rgb(31, 68, 113)
HSL	hsl(213, 57%, 28%)
HSV	hsv(213, 73%, 44%)
CMYK	cmyk(72.6%, 39.8%, 0%, 55.7%)
CIE-LAB	lab(28.43, 3.21, -29.83)
CIE-LCH	lch(28.43, 30.01, 276.13°)
OKLab	oklab(38.36% -0.0232 -0.0849)
OKLCH	oklch(38.36% 0.088 254.7)
XYZ	xyz(5.6117, 5.6172, 16.4081)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4471 #714C1F

analogous

#1F6D71 #1F4471 #231F71

triadic

#1F4471 #711F44 #44711F

tetradic

#1F4471 #711F6D #714C1F #1F7123

square

#1F4471 #711F6D #714C1F #1F7123

split-complementary

#1F4471 #71231F #6D711F

monochromatic

#070E18 #122741 #1F4471 #2C61A1 #407ECB

Accessibility & contrast

On white

9.89

#1F4471 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1F4471 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4471

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4471	#FFFFFF	#000000	##FFFFFF
##1F4471	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304773

Deuteranopia (green-blind)

#234070

Tritanopia (blue-blind)

#004E55

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1f4471;
/* rgb */ color: rgb(31, 68, 113);
/* oklch */ color: oklch(38.4% 0.088 254.7);

Tailwind

colors: {
  custom: {
    50: '#65779a',
    500: '#1f4471',
    950: '#000000',
  },
}

SCSS

$custom: #1f4471;
$custom-light: #65779a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4471",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 113
  },
  "hsl": {
    "h": 212.927,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.38359,
    "c": 0.08802,
    "h": 254.7
  },
  "luminance": 0.05618
}

Semantic roles & 50–950 ramp

primary

#1F4471

secondary

#A57A47

accent

#9B48E0

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4471

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

Preview Lab → · Contrast checker → · Palette generator →