#1F2289#1F2289

#1F2289 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.165 H 271.8°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1F2289
RGB	rgb(31, 34, 137)
HSL	hsl(238, 63%, 33%)
HSV	hsv(238, 77%, 54%)
CMYK	cmyk(77.4%, 75.2%, 0%, 46.3%)
CIE-LAB	lab(20.98, 35.73, -57.03)
CIE-LCH	lch(20.98, 67.30, 302.07°)
OKLab	oklab(33.39% 0.0053 -0.1651)
OKLCH	oklch(33.39% 0.165 271.8)
XYZ	xyz(5.6509, 3.2409, 23.9898)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2289 #89861F

analogous

#1F5789 #1F2289 #511F89

triadic

#1F2289 #891F22 #22891F

tetradic

#1F2289 #891F57 #89861F #1F8951

square

#1F2289 #891F57 #89861F #1F8951

split-complementary

#1F2289 #89511F #57891F

monochromatic

#080925 #141657 #1F2289 #2A2EBB #4C50D6

Accessibility & contrast

On white

12.74

#1F2289 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1F2289 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2289

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2289	#FFFFFF	#000000	##FFFFFF
##1F2289	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388C

Deuteranopia (green-blind)

#002D87

Tritanopia (blue-blind)

#004053

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1f2289;
/* rgb */ color: rgb(31, 34, 137);
/* oklch */ color: oklch(33.4% 0.165 271.8);

Tailwind

colors: {
  custom: {
    50: '#6e5ead',
    500: '#1f2289',
    950: '#000000',
  },
}

SCSS

$custom: #1f2289;
$custom-light: #6e5ead;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2289",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 137
  },
  "hsl": {
    "h": 238.302,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33388,
    "c": 0.16517,
    "h": 271.8
  },
  "luminance": 0.03242
}

Semantic roles & 50–950 ramp

primary

#1F2289

secondary

#B9B64B

accent

#E142E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F2289

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

Preview Lab → · Contrast checker → · Palette generator →