#1F2887#1F2887

#1F2887 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.2% C 0.156 H 270.9°. Best body text is #FFFFFF at 12.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F2887
RGB	rgb(31, 40, 135)
HSL	hsl(235, 63%, 33%)
HSV	hsv(235, 77%, 53%)
CMYK	cmyk(77%, 70.4%, 0%, 47.1%)
CIE-LAB	lab(22.15, 31.22, -53.85)
CIE-LCH	lch(22.15, 62.25, 300.10°)
OKLab	oklab(34.16% 0.0024 -0.1558)
OKLCH	oklch(34.16% 0.156 270.9)
XYZ	xyz(5.6956, 3.5576, 23.3035)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2887 #877E1F

analogous

#1F5C87 #1F2887 #4A1F87

triadic

#1F2887 #871F28 #28871F

tetradic

#1F2887 #871F5C #877E1F #1F874A

square

#1F2887 #871F5C #877E1F #1F874A

split-complementary

#1F2887 #874A1F #5C871F

monochromatic

#080B23 #141955 #1F2887 #2A37B9 #4B57D6

Accessibility & contrast

On white

12.27

#1F2887 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F2887 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2887

12.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2887	#FFFFFF	#000000	##FFFFFF
##1F2887	1.00	12.27	1.71	12.27
#FFFFFF	12.27	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8A

Deuteranopia (green-blind)

#003085

Tritanopia (blue-blind)

#004254

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2887;
/* rgb */ color: rgb(31, 40, 135);
/* oklch */ color: oklch(34.2% 0.156 270.9);

Tailwind

colors: {
  custom: {
    50: '#6d62ab',
    500: '#1f2887',
    950: '#000000',
  },
}

SCSS

$custom: #1f2887;
$custom-light: #6d62ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2887",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 135
  },
  "hsl": {
    "h": 234.808,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.34164,
    "c": 0.15585,
    "h": 270.9
  },
  "luminance": 0.03558
}

Semantic roles & 50–950 ramp

primary

#1F2887

secondary

#B8AF4A

accent

#D842E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2887

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

Preview Lab → · Contrast checker → · Palette generator →