#1F2F89#1F2F89

#1F2F89 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.6% C 0.150 H 269.2°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F89
RGB	rgb(31, 47, 137)
HSL	hsl(231, 63%, 33%)
HSV	hsv(231, 77%, 54%)
CMYK	cmyk(77.4%, 65.7%, 0%, 46.3%)
CIE-LAB	lab(24.10, 27.31, -51.91)
CIE-LCH	lch(24.10, 58.66, 297.75°)
OKLab	oklab(35.64% -0.0021 -0.1501)
OKLCH	oklch(35.64% 0.15 269.2)
XYZ	xyz(6.0954, 4.1298, 24.1380)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F89 #89791F

analogous

#1F6489 #1F2F89 #441F89

triadic

#1F2F89 #891F2F #2F891F

tetradic

#1F2F89 #891F64 #89791F #1F8944

square

#1F2F89 #891F64 #89791F #1F8944

split-complementary

#1F2F89 #89441F #64891F

monochromatic

#080D25 #141E57 #1F2F89 #2A40BB #4C61D6

Accessibility & contrast

On white

11.50

#1F2F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1F2F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F89

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F89	#FFFFFF	#000000	##FFFFFF
##1F2F89	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8C

Deuteranopia (green-blind)

#003487

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2f89;
/* rgb */ color: rgb(31, 47, 137);
/* oklch */ color: oklch(35.6% 0.150 269.2);

Tailwind

colors: {
  custom: {
    50: '#6c67ac',
    500: '#1f2f89',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f89;
$custom-light: #6c67ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f89",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 137
  },
  "hsl": {
    "h": 230.943,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35642,
    "c": 0.15013,
    "h": 269.2
  },
  "luminance": 0.0413
}

Semantic roles & 50–950 ramp

primary

#1F2F89

secondary

#B9A84B

accent

#CD42E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F2F89

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

Preview Lab → · Contrast checker → · Palette generator →