#1F186D#1F186D

#1F186D is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.7% C 0.139 H 276.7°. Best body text is #FFFFFF at 14.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F186D
RGB	rgb(31, 24, 109)
HSL	hsl(245, 64%, 26%)
HSV	hsv(245, 78%, 43%)
CMYK	cmyk(71.6%, 78%, 0%, 57.3%)
CIE-LAB	lab(15.74, 31.90, -47.80)
CIE-LCH	lch(15.74, 57.47, 303.72°)
OKLab	oklab(28.74% 0.0163 -0.1381)
OKLCH	oklch(28.74% 0.139 276.7)
XYZ	xyz(3.6511, 2.0484, 14.6680)
Luminance	0.0205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F186D #666D18

analogous

#183B6D #1F186D #49186D

triadic

#1F186D #6D1F18 #186D1F

tetradic

#1F186D #6D183B #666D18 #186D49

square

#1F186D #6D183B #666D18 #186D49

split-complementary

#1F186D #6D4918 #3B6D18

monochromatic

#070619 #110D3B #1F186D #2D239F #3C2ED1

Accessibility & contrast

On white

14.90

#1F186D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F186D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F186D

14.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F186D	#FFFFFF	#000000	##FFFFFF
##1F186D	1.00	14.90	1.41	14.90
#FFFFFF	14.90	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6F

Deuteranopia (green-blind)

#00246B

Tritanopia (blue-blind)

#003041

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f186d;
/* rgb */ color: rgb(31, 24, 109);
/* oklch */ color: oklch(28.7% 0.139 276.7);

Tailwind

colors: {
  custom: {
    50: '#675698',
    500: '#1f186d',
    950: '#000000',
  },
}

SCSS

$custom: #1f186d;
$custom-light: #675698;
$custom-dark: #000000;

JSON

{
  "hex": "#1f186d",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 109
  },
  "hsl": {
    "h": 244.941,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28741,
    "c": 0.13909,
    "h": 276.7
  },
  "luminance": 0.02049
}

Semantic roles & 50–950 ramp

primary

#1F186D

secondary

#9AA33E

accent

#E741D9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F186D

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

Preview Lab → · Contrast checker → · Palette generator →