#1F187D#1F187D

#1F187D is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.6% C 0.160 H 274.5°. Best body text is #FFFFFF at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F187D
RGB	rgb(31, 24, 125)
HSL	hsl(244, 68%, 29%)
HSV	hsv(244, 81%, 49%)
CMYK	cmyk(75.2%, 80.8%, 0%, 51%)
CIE-LAB	lab(17.57, 37.39, -55.08)
CIE-LCH	lch(17.57, 66.58, 304.17°)
OKLab	oklab(30.58% 0.0124 -0.1593)
OKLCH	oklch(30.58% 0.16 274.5)
XYZ	xyz(4.5922, 2.4248, 19.6241)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F187D #767D18

analogous

#18447D #1F187D #52187D

triadic

#1F187D #7D1F18 #187D1F

tetradic

#1F187D #7D1844 #767D18 #187D52

square

#1F187D #7D1844 #767D18 #187D52

split-complementary

#1F187D #7D5218 #447D18

monochromatic

#06051A #120E4A #1F187D #2C22B0 #4237D9

Accessibility & contrast

On white

14.14

#1F187D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1F187D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F187D

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F187D	#FFFFFF	#000000	##FFFFFF
##1F187D	1.00	14.14	1.49	14.14
#FFFFFF	14.14	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003080

Deuteranopia (green-blind)

#00267B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f187d;
/* rgb */ color: rgb(31, 24, 125);
/* oklch */ color: oklch(30.6% 0.160 274.5);

Tailwind

colors: {
  custom: {
    50: '#6c57a4',
    500: '#1f187d',
    950: '#000000',
  },
}

SCSS

$custom: #1f187d;
$custom-light: #6c57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f187d",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 125
  },
  "hsl": {
    "h": 244.158,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30577,
    "c": 0.1598,
    "h": 274.5
  },
  "luminance": 0.02425
}

Semantic roles & 50–950 ramp

primary

#1F187D

secondary

#AAB23F

accent

#EB3DDF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F187D

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

Preview Lab → · Contrast checker → · Palette generator →