#1B2C70#1B2C70

#1B2C70 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 32.5% C 0.119 H 268.3°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C70
RGB	rgb(27, 44, 112)
HSL	hsl(228, 61%, 27%)
HSV	hsv(228, 76%, 44%)
CMYK	cmyk(75.9%, 60.7%, 0%, 56.1%)
CIE-LAB	lab(20.84, 19.03, -41.40)
CIE-LCH	lch(20.84, 45.56, 294.69°)
OKLab	oklab(32.48% -0.0036 -0.1194)
OKLCH	oklch(32.48% 0.119 268.3)
XYZ	xyz(4.2763, 3.2038, 15.7191)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C70 #705F1B

analogous

#1B5770 #1B2C70 #351B70

triadic

#1B2C70 #701B2C #2C701B

tetradic

#1B2C70 #701B57 #705F1B #1B7035

square

#1B2C70 #701B57 #705F1B #1B7035

split-complementary

#1B2C70 #70351B #57701B

monochromatic

#060A19 #0F193F #1B2C70 #273FA1 #3755CF

Accessibility & contrast

On white

12.80

#1B2C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C70

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C70	#FFFFFF	#000000	##FFFFFF
##1B2C70	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003672

Deuteranopia (green-blind)

#002E6F

Tritanopia (blue-blind)

#003D49

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2c70;
/* rgb */ color: rgb(27, 44, 112);
/* oklch */ color: oklch(32.5% 0.119 268.3);

Tailwind

colors: {
  custom: {
    50: '#65649a',
    500: '#1b2c70',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c70;
$custom-light: #65649a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c70",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 112
  },
  "hsl": {
    "h": 228,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.32482,
    "c": 0.11945,
    "h": 268.3
  },
  "luminance": 0.03204
}

Semantic roles & 50–950 ramp

primary

#1B2C70

secondary

#A59142

accent

#C444E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2C70

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

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