#1F127F#1F127F

#1F127F is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.167 H 274.9°. Best body text is #FFFFFF at 14.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F127F
RGB	rgb(31, 18, 127)
HSL	hsl(247, 75%, 28%)
HSV	hsv(247, 86%, 50%)
CMYK	cmyk(75.6%, 85.8%, 0%, 50.2%)
CIE-LAB	lab(16.78, 41.08, -57.68)
CIE-LCH	lch(16.78, 70.81, 305.46°)
OKLab	oklab(30.09% 0.0142 -0.1668)
OKLCH	oklch(30.09% 0.167 274.9)
XYZ	xyz(4.6109, 2.2558, 20.2670)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F127F #727F12

analogous

#123B7F #1F127F #55127F

triadic

#1F127F #7F1F12 #127F1F

tetradic

#1F127F #7F123B #727F12 #127F55

square

#1F127F #7F123B #727F12 #127F55

split-complementary

#1F127F #7F5512 #3B7F12

monochromatic

#07041B #120A49 #1F127F #2C1AB5 #402BE1

Accessibility & contrast

On white

14.47

#1F127F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F127F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F127F

14.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F127F	#FFFFFF	#000000	##FFFFFF
##1F127F	1.00	14.47	1.45	14.47
#FFFFFF	14.47	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E82

Deuteranopia (green-blind)

#00247D

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f127f;
/* rgb */ color: rgb(31, 18, 127);
/* oklch */ color: oklch(30.1% 0.167 274.9);

Tailwind

colors: {
  custom: {
    50: '#6d54a5',
    500: '#1f127f',
    950: '#000000',
  },
}

SCSS

$custom: #1f127f;
$custom-light: #6d54a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f127f",
  "rgb": {
    "r": 31,
    "g": 18,
    "b": 127
  },
  "hsl": {
    "h": 247.156,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30093,
    "c": 0.16737,
    "h": 274.9
  },
  "luminance": 0.02256
}

Semantic roles & 50–950 ramp

primary

#1F127F

secondary

#A6B538

accent

#F236DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F127F

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

Preview Lab → · Contrast checker → · Palette generator →