#1F4F8F#1F4F8F

#1F4F8F is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 43.1% C 0.118 H 256.8°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F8F
RGB	rgb(31, 79, 143)
HSL	hsl(214, 64%, 34%)
HSV	hsv(214, 78%, 56%)
CMYK	cmyk(78.3%, 44.8%, 0%, 43.9%)
CIE-LAB	lab(33.70, 7.75, -40.05)
CIE-LCH	lch(33.70, 40.80, 280.95°)
OKLab	oklab(43.06% -0.0269 -0.1147)
OKLCH	oklch(43.06% 0.118 256.8)
XYZ	xyz(8.3172, 7.8655, 27.0611)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F8F #8F5F1F

analogous

#1F878F #1F4F8F #271F8F

triadic

#1F4F8F #8F1F4F #4F8F1F

tetradic

#1F4F8F #8F1F87 #8F5F1F #1F8F27

square

#1F4F8F #8F1F87 #8F5F1F #1F8F27

split-complementary

#1F4F8F #8F271F #878F1F

monochromatic

#09172A #14335D #1F4F8F #2A6BC1 #4F8AD9

Accessibility & contrast

On white

8.16

#1F4F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1F4F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F8F

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F8F	#FFFFFF	#000000	##FFFFFF
##1F4F8F	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5591

Deuteranopia (green-blind)

#194B8E

Tritanopia (blue-blind)

#005E68

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f4f8f;
/* rgb */ color: rgb(31, 79, 143);
/* oklch */ color: oklch(43.1% 0.118 256.8);

Tailwind

colors: {
  custom: {
    50: '#6c7fb0',
    500: '#1f4f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f8f;
$custom-light: #6c7fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f8f",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 143
  },
  "hsl": {
    "h": 214.286,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.43059,
    "c": 0.11782,
    "h": 256.8
  },
  "luminance": 0.07866
}

Semantic roles & 50–950 ramp

primary

#1F4F8F

secondary

#BC8D4E

accent

#A040E7

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #1F4F8F

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

Preview Lab → · Contrast checker → · Palette generator →