#1F174D#1F174D

#1F174D is a dark, moderate blue. Relative luminance 0.014; OKLCH L 25.2% C 0.095 H 284.0°. Best body text is #FFFFFF at 16.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F174D
RGB	rgb(31, 23, 77)
HSL	hsl(249, 54%, 20%)
HSV	hsv(249, 70%, 30%)
CMYK	cmyk(59.7%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(12.22, 21.08, -32.15)
CIE-LCH	lch(12.22, 38.45, 303.26°)
OKLab	oklab(25.22% 0.023 -0.0923)
OKLCH	oklch(25.22% 0.095 284)
XYZ	xyz(2.2106, 1.4398, 7.1812)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F174D #454D17

analogous

#172A4D #1F174D #3A174D

triadic

#1F174D #4D1F17 #174D1F

tetradic

#1F174D #4D172A #454D17 #174D3A

square

#1F174D #4D172A #454D17 #174D3A

split-complementary

#1F174D #4D3A17 #2A4D17

monochromatic

#090718 #0C091E #1F174D #32257C #4533AB

Accessibility & contrast

On white

16.30

#1F174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#1F174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F174D

16.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F174D	#FFFFFF	#000000	##FFFFFF
##1F174D	1.00	16.30	1.29	16.30
#FFFFFF	16.30	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224F

Deuteranopia (green-blind)

#001E4C

Tritanopia (blue-blind)

#0B242F

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1f174d;
/* rgb */ color: rgb(31, 23, 77);
/* oklch */ color: oklch(25.2% 0.095 284.0);

Tailwind

colors: {
  custom: {
    50: '#60547f',
    500: '#1f174d',
    950: '#000000',
  },
}

SCSS

$custom: #1f174d;
$custom-light: #60547f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f174d",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 248.889,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25217,
    "c": 0.09513,
    "h": 284
  },
  "luminance": 0.0144
}

Semantic roles & 50–950 ramp

primary

#1F174D

secondary

#79843C

accent

#DD4AC8

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1F174D

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

Preview Lab → · Contrast checker → · Palette generator →