#1F4074#1F4074

#1F4074 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.097 H 259.2°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F4074
RGB	rgb(31, 64, 116)
HSL	hsl(217, 58%, 29%)
HSV	hsv(217, 73%, 45%)
CMYK	cmyk(73.3%, 44.8%, 0%, 54.5%)
CIE-LAB	lab(27.35, 7.13, -33.45)
CIE-LCH	lch(27.35, 34.20, 282.03°)
OKLab	oklab(37.58% -0.0183 -0.0956)
OKLCH	oklch(37.58% 0.097 259.2)
XYZ	xyz(5.5497, 5.2185, 17.2344)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4074 #74531F

analogous

#1F6B74 #1F4074 #291F74

triadic

#1F4074 #741F40 #40741F

tetradic

#1F4074 #741F6B #74531F #1F7429

square

#1F4074 #741F6B #74531F #1F7429

split-complementary

#1F4074 #74291F #6B741F

monochromatic

#060D18 #122544 #1F4074 #2C5BA4 #4177CC

Accessibility & contrast

On white

10.27

#1F4074 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1F4074 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4074

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4074	#FFFFFF	#000000	##FFFFFF
##1F4074	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274576

Deuteranopia (green-blind)

#183D73

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f4074;
/* rgb */ color: rgb(31, 64, 116);
/* oklch */ color: oklch(37.6% 0.097 259.2);

Tailwind

colors: {
  custom: {
    50: '#66749c',
    500: '#1f4074',
    950: '#000000',
  },
}

SCSS

$custom: #1f4074;
$custom-light: #66749c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4074",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 116
  },
  "hsl": {
    "h": 216.706,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37583,
    "c": 0.09731,
    "h": 259.2
  },
  "luminance": 0.05219
}

Semantic roles & 50–950 ramp

primary

#1F4074

secondary

#A88247

accent

#A547E1

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4074

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

Preview Lab → · Contrast checker → · Palette generator →