#1B2C71#1B2C71

#1B2C71 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.121 H 268.3°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C71
RGB	rgb(27, 44, 113)
HSL	hsl(228, 61%, 27%)
HSV	hsv(228, 76%, 44%)
CMYK	cmyk(76.1%, 61.1%, 0%, 55.7%)
CIE-LAB	lab(20.93, 19.43, -41.90)
CIE-LCH	lch(20.93, 46.19, 294.88°)
OKLab	oklab(32.57% -0.0036 -0.1209)
OKLCH	oklch(32.57% 0.121 268.3)
XYZ	xyz(4.3323, 3.2262, 16.0140)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C71 #71601B

analogous

#1B5771 #1B2C71 #351B71

triadic

#1B2C71 #711B2C #2C711B

tetradic

#1B2C71 #711B57 #71601B #1B7135

square

#1B2C71 #711B57 #71601B #1B7135

split-complementary

#1B2C71 #71351B #57711B

monochromatic

#060A19 #0F1940 #1B2C71 #273FA2 #3755CF

Accessibility & contrast

On white

12.76

#1B2C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B2C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C71

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C71	#FFFFFF	#000000	##FFFFFF
##1B2C71	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003673

Deuteranopia (green-blind)

#002E70

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2c71;
/* rgb */ color: rgb(27, 44, 113);
/* oklch */ color: oklch(32.6% 0.121 268.3);

Tailwind

colors: {
  custom: {
    50: '#65649a',
    500: '#1b2c71',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c71;
$custom-light: #65649a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c71",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 113
  },
  "hsl": {
    "h": 228.14,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.32573,
    "c": 0.12093,
    "h": 268.3
  },
  "luminance": 0.03227
}

Semantic roles & 50–950 ramp

primary

#1B2C71

secondary

#A69242

accent

#C543E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2C71

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

Preview Lab → · Contrast checker → · Palette generator →