#1F2187#1F2187

#1F2187 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.0% C 0.164 H 272.1°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1F2187
RGB	rgb(31, 33, 135)
HSL	hsl(239, 63%, 33%)
HSV	hsv(239, 77%, 53%)
CMYK	cmyk(77%, 75.6%, 0%, 47.1%)
CIE-LAB	lab(20.55, 35.63, -56.50)
CIE-LCH	lch(20.55, 66.79, 302.24°)
OKLab	oklab(33.01% 0.0061 -0.1635)
OKLCH	oklch(33.01% 0.164 272.1)
XYZ	xyz(5.4806, 3.1277, 23.2318)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2187 #87851F

analogous

#1F5587 #1F2187 #511F87

triadic

#1F2187 #871F21 #21871F

tetradic

#1F2187 #871F55 #87851F #1F8751

square

#1F2187 #871F55 #87851F #1F8751

split-complementary

#1F2187 #87511F #55871F

monochromatic

#080923 #141555 #1F2187 #2A2DB9 #4B4DD6

Accessibility & contrast

On white

12.92

#1F2187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1F2187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2187

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2187	#FFFFFF	#000000	##FFFFFF
##1F2187	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378A

Deuteranopia (green-blind)

#002C85

Tritanopia (blue-blind)

#003E52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f2187;
/* rgb */ color: rgb(31, 33, 135);
/* oklch */ color: oklch(33.0% 0.164 272.1);

Tailwind

colors: {
  custom: {
    50: '#6d5dab',
    500: '#1f2187',
    950: '#000000',
  },
}

SCSS

$custom: #1f2187;
$custom-light: #6d5dab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2187",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 135
  },
  "hsl": {
    "h": 238.846,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33013,
    "c": 0.16363,
    "h": 272.1
  },
  "luminance": 0.03128
}

Semantic roles & 50–950 ramp

primary

#1F2187

secondary

#B8B64A

accent

#E342E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2187

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

Preview Lab → · Contrast checker → · Palette generator →