#1F2889#1F2889

#1F2889 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.4% C 0.159 H 270.8°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F2889
RGB	rgb(31, 40, 137)
HSL	hsl(235, 63%, 33%)
HSV	hsv(235, 77%, 54%)
CMYK	cmyk(77.4%, 70.8%, 0%, 46.3%)
CIE-LAB	lab(22.35, 31.96, -54.77)
CIE-LCH	lch(22.35, 63.42, 300.26°)
OKLab	oklab(34.37% 0.0022 -0.1585)
OKLCH	oklch(34.37% 0.159 270.8)
XYZ	xyz(5.8377, 3.6144, 24.0520)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2889 #89801F

analogous

#1F5D89 #1F2889 #4B1F89

triadic

#1F2889 #891F28 #28891F

tetradic

#1F2889 #891F5D #89801F #1F894B

square

#1F2889 #891F5D #89801F #1F894B

split-complementary

#1F2889 #894B1F #5D891F

monochromatic

#080B25 #141957 #1F2889 #2A37BB #4C58D6

Accessibility & contrast

On white

12.19

#1F2889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1F2889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2889

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2889	#FFFFFF	#000000	##FFFFFF
##1F2889	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8C

Deuteranopia (green-blind)

#003087

Tritanopia (blue-blind)

#004355

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2889;
/* rgb */ color: rgb(31, 40, 137);
/* oklch */ color: oklch(34.4% 0.159 270.8);

Tailwind

colors: {
  custom: {
    50: '#6d62ac',
    500: '#1f2889',
    950: '#000000',
  },
}

SCSS

$custom: #1f2889;
$custom-light: #6d62ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2889",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 137
  },
  "hsl": {
    "h": 234.906,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.34371,
    "c": 0.15854,
    "h": 270.8
  },
  "luminance": 0.03615
}

Semantic roles & 50–950 ramp

primary

#1F2889

secondary

#B9B04B

accent

#D842E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2889

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

Preview Lab → · Contrast checker → · Palette generator →