#1F4072#1F4072

#1F4072 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.4% C 0.094 H 258.6°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F4072
RGB	rgb(31, 64, 114)
HSL	hsl(216, 57%, 28%)
HSV	hsv(216, 73%, 45%)
CMYK	cmyk(72.8%, 43.9%, 0%, 55.3%)
CIE-LAB	lab(27.22, 6.33, -32.39)
CIE-LCH	lch(27.22, 33.00, 281.06°)
OKLab	oklab(37.44% -0.0187 -0.0925)
OKLCH	oklch(37.44% 0.094 258.6)
XYZ	xyz(5.4346, 5.1724, 16.6283)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4072 #72511F

analogous

#1F6972 #1F4072 #281F72

triadic

#1F4072 #721F40 #40721F

tetradic

#1F4072 #721F69 #72511F #1F7228

square

#1F4072 #721F69 #72511F #1F7228

split-complementary

#1F4072 #72281F #69721F

monochromatic

#070E18 #122542 #1F4072 #2C5BA2 #4077CB

Accessibility & contrast

On white

10.32

#1F4072 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1F4072 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4072

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4072	#FFFFFF	#000000	##FFFFFF
##1F4072	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284474

Deuteranopia (green-blind)

#1B3D71

Tritanopia (blue-blind)

#004C53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f4072;
/* rgb */ color: rgb(31, 64, 114);
/* oklch */ color: oklch(37.4% 0.094 258.6);

Tailwind

colors: {
  custom: {
    50: '#66749b',
    500: '#1f4072',
    950: '#000000',
  },
}

SCSS

$custom: #1f4072;
$custom-light: #66749b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4072",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 114
  },
  "hsl": {
    "h": 216.145,
    "s": 57.241,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37442,
    "c": 0.09433,
    "h": 258.6
  },
  "luminance": 0.05173
}

Semantic roles & 50–950 ramp

primary

#1F4072

secondary

#A68047

accent

#A447E0

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4072

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

Preview Lab → · Contrast checker → · Palette generator →