#1F145B#1F145B

#1F145B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 26.1% C 0.119 H 281.3°. Best body text is #FFFFFF at 16.04:1 contrast (WCAG AA passes).

Color values

HEX	#1F145B
RGB	rgb(31, 20, 91)
HSL	hsl(249, 64%, 22%)
HSV	hsv(249, 78%, 36%)
CMYK	cmyk(65.9%, 78%, 0%, 64.3%)
CIE-LAB	lab(12.90, 28.04, -40.56)
CIE-LCH	lch(12.90, 49.31, 304.66°)
OKLab	oklab(26.14% 0.0234 -0.1169)
OKLCH	oklch(26.14% 0.119 281.3)
XYZ	xyz(2.7030, 1.5468, 10.0516)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F145B #505B14

analogous

#142D5B #1F145B #43145B

triadic

#1F145B #5B1F14 #145B1F

tetradic

#1F145B #5B142D #505B14 #145B43

square

#1F145B #5B142D #505B14 #145B43

split-complementary

#1F145B #5B4314 #2D5B14

monochromatic

#090619 #0E0929 #1F145B #301F8D #412ABF

Accessibility & contrast

On white

16.04

#1F145B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1F145B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F145B

16.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F145B	#FFFFFF	#000000	##FFFFFF
##1F145B	1.00	16.04	1.31	16.04
#FFFFFF	16.04	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245D

Deuteranopia (green-blind)

#001F5A

Tritanopia (blue-blind)

#002836

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1f145b;
/* rgb */ color: rgb(31, 20, 91);
/* oklch */ color: oklch(26.1% 0.119 281.3);

Tailwind

colors: {
  custom: {
    50: '#64538a',
    500: '#1f145b',
    950: '#000000',
  },
}

SCSS

$custom: #1f145b;
$custom-light: #64538a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f145b",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 91
  },
  "hsl": {
    "h": 249.296,
    "s": 63.964,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26138,
    "c": 0.11927,
    "h": 281.3
  },
  "luminance": 0.01547
}

Semantic roles & 50–950 ramp

primary

#1F145B

secondary

#859338

accent

#E741CD

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F145B

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

Preview Lab → · Contrast checker → · Palette generator →