#1F174E#1F174E

#1F174E is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.097 H 283.7°. Best body text is #FFFFFF at 16.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F174E
RGB	rgb(31, 23, 78)
HSL	hsl(249, 54%, 20%)
HSV	hsv(249, 71%, 31%)
CMYK	cmyk(60.3%, 70.5%, 0%, 69.4%)
CIE-LAB	lab(12.31, 21.45, -32.69)
CIE-LCH	lch(12.31, 39.10, 303.27°)
OKLab	oklab(25.31% 0.0229 -0.0939)
OKLCH	oklch(25.31% 0.097 283.7)
XYZ	xyz(2.2462, 1.4540, 7.3685)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F174E #464E17

analogous

#172B4E #1F174E #3A174E

triadic

#1F174E #4E1F17 #174E1F

tetradic

#1F174E #4E172B #464E17 #174E3A

square

#1F174E #4E172B #464E17 #174E3A

split-complementary

#1F174E #4E3A17 #2B4E17

monochromatic

#090718 #0C091F #1F174E #32257D #4533AD

Accessibility & contrast

On white

16.27

#1F174E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#1F174E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F174E

16.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F174E	#FFFFFF	#000000	##FFFFFF
##1F174E	1.00	16.27	1.29	16.27
#FFFFFF	16.27	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002250

Deuteranopia (green-blind)

#001E4D

Tritanopia (blue-blind)

#0A2530

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1f174e;
/* rgb */ color: rgb(31, 23, 78);
/* oklch */ color: oklch(25.3% 0.097 283.7);

Tailwind

colors: {
  custom: {
    50: '#605480',
    500: '#1f174e',
    950: '#000000',
  },
}

SCSS

$custom: #1f174e;
$custom-light: #605480;
$custom-dark: #000000;

JSON

{
  "hex": "#1f174e",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 78
  },
  "hsl": {
    "h": 248.727,
    "s": 54.455,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25314,
    "c": 0.09663,
    "h": 283.7
  },
  "luminance": 0.01454
}

Semantic roles & 50–950 ramp

primary

#1F174E

secondary

#7A853C

accent

#DE4AC8

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05030A

muted

#79787C

Preview Lab

Preview with #1F174E

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

Preview Lab → · Contrast checker → · Palette generator →