#1F4075#1F4075

#1F4075 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.099 H 259.5°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F4075
RGB	rgb(31, 64, 117)
HSL	hsl(217, 58%, 29%)
HSV	hsv(217, 74%, 46%)
CMYK	cmyk(73.5%, 45.3%, 0%, 54.1%)
CIE-LAB	lab(27.41, 7.53, -33.98)
CIE-LCH	lch(27.41, 34.80, 282.49°)
OKLab	oklab(37.65% -0.018 -0.0971)
OKLCH	oklch(37.65% 0.099 259.5)
XYZ	xyz(5.6082, 5.2419, 17.5424)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4075 #75541F

analogous

#1F6B75 #1F4075 #291F75

triadic

#1F4075 #751F40 #40751F

tetradic

#1F4075 #751F6B #75541F #1F7529

square

#1F4075 #751F6B #75541F #1F7529

split-complementary

#1F4075 #75291F #6B751F

monochromatic

#060D18 #122645 #1F4075 #2C5AA5 #4277CD

Accessibility & contrast

On white

10.25

#1F4075 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1F4075 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4075

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4075	#FFFFFF	#000000	##FFFFFF
##1F4075	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264577

Deuteranopia (green-blind)

#173D74

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f4075;
/* rgb */ color: rgb(31, 64, 117);
/* oklch */ color: oklch(37.7% 0.099 259.5);

Tailwind

colors: {
  custom: {
    50: '#66749d',
    500: '#1f4075',
    950: '#000000',
  },
}

SCSS

$custom: #1f4075;
$custom-light: #66749d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4075",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 117
  },
  "hsl": {
    "h": 216.977,
    "s": 58.108,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37653,
    "c": 0.0988,
    "h": 259.5
  },
  "luminance": 0.05242
}

Semantic roles & 50–950 ramp

primary

#1F4075

secondary

#A98347

accent

#A646E1

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1F4075

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

Preview Lab → · Contrast checker → · Palette generator →