#1F4F87#1F4F87

#1F4F87 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.5% C 0.107 H 254.4°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F87
RGB	rgb(31, 79, 135)
HSL	hsl(212, 63%, 33%)
HSV	hsv(212, 77%, 53%)
CMYK	cmyk(77%, 41.5%, 0%, 47.1%)
CIE-LAB	lab(33.20, 4.57, -35.95)
CIE-LCH	lch(33.20, 36.24, 277.24°)
OKLab	oklab(42.51% -0.0287 -0.1027)
OKLCH	oklch(42.51% 0.107 254.4)
XYZ	xyz(7.7326, 7.6317, 23.9825)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F87 #87571F

analogous

#1F8387 #1F4F87 #231F87

triadic

#1F4F87 #871F4F #4F871F

tetradic

#1F4F87 #871F83 #87571F #1F8723

square

#1F4F87 #871F83 #87571F #1F8723

split-complementary

#1F4F87 #87231F #83871F

monochromatic

#081523 #143255 #1F4F87 #2A6CB9 #4B8BD6

Accessibility & contrast

On white

8.31

#1F4F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1F4F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F87

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F87	#FFFFFF	#000000	##FFFFFF
##1F4F87	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345389

Deuteranopia (green-blind)

#234A86

Tritanopia (blue-blind)

#005C64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4f87;
/* rgb */ color: rgb(31, 79, 135);
/* oklch */ color: oklch(42.5% 0.107 254.4);

Tailwind

colors: {
  custom: {
    50: '#6a7faa',
    500: '#1f4f87',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f87;
$custom-light: #6a7faa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f87",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 135
  },
  "hsl": {
    "h": 212.308,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42512,
    "c": 0.1066,
    "h": 254.4
  },
  "luminance": 0.07633
}

Semantic roles & 50–950 ramp

primary

#1F4F87

secondary

#B8854A

accent

#9A42E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4F87

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

Preview Lab → · Contrast checker → · Palette generator →