#1F1988#1F1988

#1F1988 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.173 H 273.1°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F1988
RGB	rgb(31, 25, 136)
HSL	hsl(243, 69%, 32%)
HSV	hsv(243, 82%, 53%)
CMYK	cmyk(77.2%, 81.6%, 0%, 46.7%)
CIE-LAB	lab(19.07, 40.51, -59.57)
CIE-LCH	lch(19.07, 72.04, 304.22°)
OKLab	oklab(32.01% 0.0093 -0.1723)
OKLCH	oklch(32.01% 0.173 273.1)
XYZ	xyz(5.3552, 2.7636, 23.5390)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1988 #828819

analogous

#194B88 #1F1988 #571988

triadic

#1F1988 #881F19 #19881F

tetradic

#1F1988 #88194B #828819 #198857

square

#1F1988 #88194B #828819 #198857

split-complementary

#1F1988 #885719 #4B8819

monochromatic

#070621 #130F54 #1F1988 #2B23BC #4840DC

Accessibility & contrast

On white

13.52

#1F1988 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F1988 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1988

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1988	#FFFFFF	#000000	##FFFFFF
##1F1988	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002986

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f1988;
/* rgb */ color: rgb(31, 25, 136);
/* oklch */ color: oklch(32.0% 0.173 273.1);

Tailwind

colors: {
  custom: {
    50: '#6e59ac',
    500: '#1f1988',
    950: '#000000',
  },
}

SCSS

$custom: #1f1988;
$custom-light: #6e59ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1988",
  "rgb": {
    "r": 31,
    "g": 25,
    "b": 136
  },
  "hsl": {
    "h": 243.243,
    "s": 68.944,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32005,
    "c": 0.1726,
    "h": 273.1
  },
  "luminance": 0.02764
}

Semantic roles & 50–950 ramp

primary

#1F1988

secondary

#B5BB41

accent

#EC3CE2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F1988

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

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