#1B2972#1B2972

#1B2972 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.0% C 0.126 H 269.5°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B2972
RGB	rgb(27, 41, 114)
HSL	hsl(230, 62%, 28%)
HSV	hsv(230, 76%, 45%)
CMYK	cmyk(76.3%, 64%, 0%, 55.3%)
CIE-LAB	lab(20.18, 21.97, -43.77)
CIE-LCH	lch(20.18, 48.97, 296.65°)
OKLab	oklab(32.04% -0.0012 -0.1264)
OKLCH	oklch(32.04% 0.126 269.5)
XYZ	xyz(4.2812, 3.0333, 16.2762)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2972 #72641B

analogous

#1B5472 #1B2972 #391B72

triadic

#1B2972 #721B29 #29721B

tetradic

#1B2972 #721B54 #72641B #1B7239

square

#1B2972 #721B54 #72641B #1B7239

split-complementary

#1B2972 #72391B #54721B

monochromatic

#060919 #0F1741 #1B2972 #273BA3 #3850D0

Accessibility & contrast

On white

13.07

#1B2972 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B2972 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2972

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2972	#FFFFFF	#000000	##FFFFFF
##1B2972	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003574

Deuteranopia (green-blind)

#002D71

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2972;
/* rgb */ color: rgb(27, 41, 114);
/* oklch */ color: oklch(32.0% 0.126 269.5);

Tailwind

colors: {
  custom: {
    50: '#65629b',
    500: '#1b2972',
    950: '#000000',
  },
}

SCSS

$custom: #1b2972;
$custom-light: #65629b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2972",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 114
  },
  "hsl": {
    "h": 230.345,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.32042,
    "c": 0.12641,
    "h": 269.5
  },
  "luminance": 0.03034
}

Semantic roles & 50–950 ramp

primary

#1B2972

secondary

#A79642

accent

#CB43E5

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B2972

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

Preview Lab → · Contrast checker → · Palette generator →