#1B1970#1B1970

#1B1970 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.143 H 273.8°. Best body text is #FFFFFF at 14.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B1970
RGB	rgb(27, 25, 112)
HSL	hsl(241, 64%, 27%)
HSV	hsv(241, 78%, 44%)
CMYK	cmyk(75.9%, 77.7%, 0%, 56.1%)
CIE-LAB	lab(15.99, 31.91, -49.35)
CIE-LCH	lch(15.99, 58.77, 302.89°)
OKLab	oklab(28.94% 0.0095 -0.1427)
OKLCH	oklch(28.94% 0.143 273.8)
XYZ	xyz(3.7233, 2.0978, 15.5348)
Luminance	0.0210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1970 #6E7019

analogous

#194370 #1B1970 #471970

triadic

#1B1970 #701B19 #19701B

tetradic

#1B1970 #701943 #6E7019 #197047

square

#1B1970 #701943 #6E7019 #197047

split-complementary

#1B1970 #704719 #437019

monochromatic

#060619 #0F0E3E #1B1970 #2724A2 #3632D1

Accessibility & contrast

On white

14.79

#1B1970 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1B1970 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1970

14.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1970	#FFFFFF	#000000	##FFFFFF
##1B1970	1.00	14.79	1.42	14.79
#FFFFFF	14.79	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C73

Deuteranopia (green-blind)

#00246E

Tritanopia (blue-blind)

#003243

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1b1970;
/* rgb */ color: rgb(27, 25, 112);
/* oklch */ color: oklch(28.9% 0.143 273.8);

Tailwind

colors: {
  custom: {
    50: '#67579a',
    500: '#1b1970',
    950: '#000000',
  },
}

SCSS

$custom: #1b1970;
$custom-light: #67579a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1970",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 112
  },
  "hsl": {
    "h": 241.379,
    "s": 63.504,
    "l": 26.863
  },
  "oklch": {
    "l": 0.28943,
    "c": 0.14307,
    "h": 273.8
  },
  "luminance": 0.02098
}

Semantic roles & 50–950 ramp

primary

#1B1970

secondary

#A3A540

accent

#E741E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1970

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

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