#1F2488#1F2488

#1F2488 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.162 H 271.6°. Best body text is #FFFFFF at 12.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F2488
RGB	rgb(31, 36, 136)
HSL	hsl(237, 63%, 33%)
HSV	hsv(237, 77%, 53%)
CMYK	cmyk(77.2%, 73.5%, 0%, 46.7%)
CIE-LAB	lab(21.32, 34.14, -55.85)
CIE-LCH	lch(21.32, 65.46, 301.44°)
OKLab	oklab(33.6% 0.0045 -0.1616)
OKLCH	oklch(33.6% 0.162 271.6)
XYZ	xyz(5.6384, 3.3300, 23.6334)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2488 #88831F

analogous

#1F5888 #1F2488 #4F1F88

triadic

#1F2488 #881F24 #24881F

tetradic

#1F2488 #881F58 #88831F #1F884F

square

#1F2488 #881F58 #88831F #1F884F

split-complementary

#1F2488 #884F1F #58881F

monochromatic

#080A24 #141756 #1F2488 #2A31BA #4B52D6

Accessibility & contrast

On white

12.60

#1F2488 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F2488 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2488

12.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2488	#FFFFFF	#000000	##FFFFFF
##1F2488	1.00	12.60	1.67	12.60
#FFFFFF	12.60	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388B

Deuteranopia (green-blind)

#002E86

Tritanopia (blue-blind)

#004053

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f2488;
/* rgb */ color: rgb(31, 36, 136);
/* oklch */ color: oklch(33.6% 0.162 271.6);

Tailwind

colors: {
  custom: {
    50: '#6d5fac',
    500: '#1f2488',
    950: '#000000',
  },
}

SCSS

$custom: #1f2488;
$custom-light: #6d5fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2488",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 136
  },
  "hsl": {
    "h": 237.143,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33596,
    "c": 0.16171,
    "h": 271.6
  },
  "luminance": 0.03331
}

Semantic roles & 50–950 ramp

primary

#1F2488

secondary

#B9B34A

accent

#DE42E6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2488

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

Preview Lab → · Contrast checker → · Palette generator →