#1F2988#1F2988

#1F2988 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.4% C 0.156 H 270.6°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F2988
RGB	rgb(31, 41, 136)
HSL	hsl(234, 63%, 33%)
HSV	hsv(234, 77%, 53%)
CMYK	cmyk(77.2%, 69.9%, 0%, 46.7%)
CIE-LAB	lab(22.49, 30.93, -53.92)
CIE-LCH	lch(22.49, 62.16, 299.84°)
OKLab	oklab(34.44% 0.0017 -0.156)
OKLCH	oklch(34.44% 0.156 270.6)
XYZ	xyz(5.8004, 3.6541, 23.6874)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2988 #887E1F

analogous

#1F5D88 #1F2988 #4A1F88

triadic

#1F2988 #881F29 #29881F

tetradic

#1F2988 #881F5D #887E1F #1F884A

square

#1F2988 #881F5D #887E1F #1F884A

split-complementary

#1F2988 #884A1F #5D881F

monochromatic

#080B24 #141A56 #1F2988 #2A38BA #4B59D6

Accessibility & contrast

On white

12.13

#1F2988 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F2988 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2988

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2988	#FFFFFF	#000000	##FFFFFF
##1F2988	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8B

Deuteranopia (green-blind)

#003186

Tritanopia (blue-blind)

#004355

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f2988;
/* rgb */ color: rgb(31, 41, 136);
/* oklch */ color: oklch(34.4% 0.156 270.6);

Tailwind

colors: {
  custom: {
    50: '#6d63ac',
    500: '#1f2988',
    950: '#000000',
  },
}

SCSS

$custom: #1f2988;
$custom-light: #6d63ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2988",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 136
  },
  "hsl": {
    "h": 234.286,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34442,
    "c": 0.15603,
    "h": 270.6
  },
  "luminance": 0.03655
}

Semantic roles & 50–950 ramp

primary

#1F2988

secondary

#B9AE4A

accent

#D642E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2988

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

Preview Lab → · Contrast checker → · Palette generator →