#1F155C#1F155C

#1F155C is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.4% C 0.119 H 280.8°. Best body text is #FFFFFF at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F155C
RGB	rgb(31, 21, 92)
HSL	hsl(248, 63%, 22%)
HSV	hsv(248, 77%, 36%)
CMYK	cmyk(66.3%, 77.2%, 0%, 63.9%)
CIE-LAB	lab(13.23, 27.77, -40.69)
CIE-LCH	lch(13.23, 49.26, 304.31°)
OKLab	oklab(26.4% 0.0224 -0.1173)
OKLCH	oklch(26.4% 0.119 280.8)
XYZ	xyz(2.7644, 1.6001, 10.2863)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F155C #525C15

analogous

#152E5C #1F155C #43155C

triadic

#1F155C #5C1F15 #155C1F

tetradic

#1F155C #5C152E #525C15 #155C43

square

#1F155C #5C152E #525C15 #155C43

split-complementary

#1F155C #5C4315 #2E5C15

monochromatic

#080619 #0E0A2A #1F155C #30208E #412CC0

Accessibility & contrast

On white

15.91

#1F155C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1F155C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F155C

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F155C	#FFFFFF	#000000	##FFFFFF
##1F155C	1.00	15.91	1.32	15.91
#FFFFFF	15.91	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255E

Deuteranopia (green-blind)

#001F5B

Tritanopia (blue-blind)

#002937

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1f155c;
/* rgb */ color: rgb(31, 21, 92);
/* oklch */ color: oklch(26.4% 0.119 280.8);

Tailwind

colors: {
  custom: {
    50: '#64538b',
    500: '#1f155c',
    950: '#000000',
  },
}

SCSS

$custom: #1f155c;
$custom-light: #64538b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f155c",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 92
  },
  "hsl": {
    "h": 248.451,
    "s": 62.832,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26404,
    "c": 0.11945,
    "h": 280.8
  },
  "luminance": 0.016
}

Semantic roles & 50–950 ramp

primary

#1F155C

secondary

#879339

accent

#E642CF

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F155C

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

Preview Lab → · Contrast checker → · Palette generator →