#1F127A#1F127A

#1F127A is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.5% C 0.161 H 275.6°. Best body text is #FFFFFF at 14.73:1 contrast (WCAG AA passes).

Color values

HEX	#1F127A
RGB	rgb(31, 18, 122)
HSL	hsl(248, 74%, 27%)
HSV	hsv(248, 85%, 48%)
CMYK	cmyk(74.6%, 85.2%, 0%, 52.2%)
CIE-LAB	lab(16.15, 39.50, -55.53)
CIE-LCH	lch(16.15, 68.14, 305.42°)
OKLab	oklab(29.48% 0.0158 -0.1605)
OKLCH	oklch(29.48% 0.161 275.6)
XYZ	xyz(4.2931, 2.1286, 18.5932)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F127A #6D7A12

analogous

#12397A #1F127A #53127A

triadic

#1F127A #7A1F12 #127A1F

tetradic

#1F127A #7A1239 #6D7A12 #127A53

square

#1F127A #7A1239 #6D7A12 #127A53

split-complementary

#1F127A #7A5312 #397A12

monochromatic

#07041B #110A45 #1F127A #2D1AAF #3E27DF

Accessibility & contrast

On white

14.73

#1F127A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F127A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F127A

14.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F127A	#FFFFFF	#000000	##FFFFFF
##1F127A	1.00	14.73	1.43	14.73
#FFFFFF	14.73	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C7D

Deuteranopia (green-blind)

#002378

Tritanopia (blue-blind)

#003347

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f127a;
/* rgb */ color: rgb(31, 18, 122);
/* oklch */ color: oklch(29.5% 0.161 275.6);

Tailwind

colors: {
  custom: {
    50: '#6b54a2',
    500: '#1f127a',
    950: '#000000',
  },
}

SCSS

$custom: #1f127a;
$custom-light: #6b54a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f127a",
  "rgb": {
    "r": 31,
    "g": 18,
    "b": 122
  },
  "hsl": {
    "h": 247.5,
    "s": 74.286,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29479,
    "c": 0.16129,
    "h": 275.6
  },
  "luminance": 0.02129
}

Semantic roles & 50–950 ramp

primary

#1F127A

secondary

#A1B038

accent

#F137DA

background

#F7F5FA

surface

#EDE8F4

border

#C8C4CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F127A

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

Preview Lab → · Contrast checker → · Palette generator →