#1B2C63#1B2C63

#1B2C63 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.3% C 0.100 H 267.4°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C63
RGB	rgb(27, 44, 99)
HSL	hsl(226, 57%, 25%)
HSV	hsv(226, 73%, 39%)
CMYK	cmyk(72.7%, 55.6%, 0%, 61.2%)
CIE-LAB	lab(19.78, 13.75, -34.67)
CIE-LCH	lch(19.78, 37.30, 291.63°)
OKLab	oklab(31.35% -0.0045 -0.0996)
OKLCH	oklch(31.35% 0.1 267.4)
XYZ	xyz(3.6040, 2.9349, 12.1785)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C63 #63521B

analogous

#1B5063 #1B2C63 #2E1B63

triadic

#1B2C63 #631B2C #2C631B

tetradic

#1B2C63 #631B50 #63521B #1B632E

square

#1B2C63 #631B50 #63521B #1B632E

split-complementary

#1B2C63 #632E1B #50631B

monochromatic

#070B18 #0E1733 #1B2C63 #284193 #3557C3

Accessibility & contrast

On white

13.23

#1B2C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B2C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C63

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C63	#FFFFFF	#000000	##FFFFFF
##1B2C63	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093365

Deuteranopia (green-blind)

#002D62

Tritanopia (blue-blind)

#003943

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b2c63;
/* rgb */ color: rgb(27, 44, 99);
/* oklch */ color: oklch(31.3% 0.100 267.4);

Tailwind

colors: {
  custom: {
    50: '#616490',
    500: '#1b2c63',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c63;
$custom-light: #616490;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c63",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 99
  },
  "hsl": {
    "h": 225.833,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.31349,
    "c": 0.09971,
    "h": 267.4
  },
  "luminance": 0.02935
}

Semantic roles & 50–950 ramp

primary

#1B2C63

secondary

#988441

accent

#BC47E0

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #1B2C63

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

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