#1F176D#1F176D

#1F176D is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.140 H 276.9°. Best body text is #FFFFFF at 14.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F176D
RGB	rgb(31, 23, 109)
HSL	hsl(246, 65%, 26%)
HSV	hsv(246, 79%, 43%)
CMYK	cmyk(71.6%, 78.9%, 0%, 57.3%)
CIE-LAB	lab(15.53, 32.50, -48.15)
CIE-LCH	lch(15.53, 58.09, 304.01°)
OKLab	oklab(28.59% 0.0169 -0.1391)
OKLCH	oklch(28.59% 0.14 276.9)
XYZ	xyz(3.6309, 2.0079, 14.6613)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F176D #656D17

analogous

#173A6D #1F176D #4A176D

triadic

#1F176D #6D1F17 #176D1F

tetradic

#1F176D #6D173A #656D17 #176D4A

square

#1F176D #6D173A #656D17 #176D4A

split-complementary

#1F176D #6D4A17 #3A6D17

monochromatic

#070519 #110C3A #1F176D #2D22A0 #3C2CD2

Accessibility & contrast

On white

14.98

#1F176D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1F176D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F176D

14.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F176D	#FFFFFF	#000000	##FFFFFF
##1F176D	1.00	14.98	1.40	14.98
#FFFFFF	14.98	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6F

Deuteranopia (green-blind)

#00236B

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f176d;
/* rgb */ color: rgb(31, 23, 109);
/* oklch */ color: oklch(28.6% 0.140 276.9);

Tailwind

colors: {
  custom: {
    50: '#685698',
    500: '#1f176d',
    950: '#000000',
  },
}

SCSS

$custom: #1f176d;
$custom-light: #685698;
$custom-dark: #000000;

JSON

{
  "hex": "#1f176d",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 109
  },
  "hsl": {
    "h": 245.581,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28593,
    "c": 0.14017,
    "h": 276.9
  },
  "luminance": 0.02008
}

Semantic roles & 50–950 ramp

primary

#1F176D

secondary

#99A33D

accent

#E840D8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F176D

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

Preview Lab → · Contrast checker → · Palette generator →