#1F4871#1F4871

#1F4871 is a dark, moderate cyan. Relative luminance 0.061; OKLCH L 39.4% C 0.084 H 250.8°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F4871
RGB	rgb(31, 72, 113)
HSL	hsl(210, 57%, 28%)
HSV	hsv(210, 73%, 44%)
CMYK	cmyk(72.6%, 36.3%, 0%, 55.7%)
CIE-LAB	lab(29.71, 0.53, -27.80)
CIE-LCH	lch(29.71, 27.81, 271.10°)
OKLab	oklab(39.36% -0.0275 -0.0789)
OKLCH	oklch(39.36% 0.084 250.8)
XYZ	xyz(5.8620, 6.1177, 16.4915)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4871 #71481F

analogous

#1F7171 #1F4871 #1F1F71

triadic

#1F4871 #711F48 #48711F

tetradic

#1F4871 #711F71 #71481F #1F711F

square

#1F4871 #711F71 #71481F #1F711F

split-complementary

#1F4871 #711F1F #71711F

monochromatic

#070F18 #122941 #1F4871 #2C67A1 #4085CB

Accessibility & contrast

On white

9.44

#1F4871 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1F4871 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4871

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4871	#FFFFFF	#000000	##FFFFFF
##1F4871	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364A73

Deuteranopia (green-blind)

#2A4270

Tritanopia (blue-blind)

#005257

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4871;
/* rgb */ color: rgb(31, 72, 113);
/* oklch */ color: oklch(39.4% 0.084 250.8);

Tailwind

colors: {
  custom: {
    50: '#657a9a',
    500: '#1f4871',
    950: '#000000',
  },
}

SCSS

$custom: #1f4871;
$custom-light: #657a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4871",
  "rgb": {
    "r": 31,
    "g": 72,
    "b": 113
  },
  "hsl": {
    "h": 210,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.39361,
    "c": 0.08357,
    "h": 250.8
  },
  "luminance": 0.06118
}

Semantic roles & 50–950 ramp

primary

#1F4871

secondary

#A57647

accent

#9448E0

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1F4871

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

Preview Lab → · Contrast checker → · Palette generator →