#1B2A63#1B2A63

#1B2A63 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.103 H 268.6°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A63
RGB	rgb(27, 42, 99)
HSL	hsl(228, 57%, 25%)
HSV	hsv(228, 73%, 39%)
CMYK	cmyk(72.7%, 57.6%, 0%, 61.2%)
CIE-LAB	lab(19.18, 15.20, -35.64)
CIE-LCH	lch(19.18, 38.75, 293.10°)
OKLab	oklab(30.9% -0.0025 -0.1025)
OKLCH	oklch(30.9% 0.103 268.6)
XYZ	xyz(3.5313, 2.7895, 12.1543)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A63 #63541B

analogous

#1B4E63 #1B2A63 #301B63

triadic

#1B2A63 #631B2A #2A631B

tetradic

#1B2A63 #631B4E #63541B #1B6330

square

#1B2A63 #631B4E #63541B #1B6330

split-complementary

#1B2A63 #63301B #4E631B

monochromatic

#070A18 #0E1633 #1B2A63 #283E93 #3553C3

Accessibility & contrast

On white

13.48

#1B2A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A63

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A63	#FFFFFF	#000000	##FFFFFF
##1B2A63	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#023265

Deuteranopia (green-blind)

#002B62

Tritanopia (blue-blind)

#003842

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2a63;
/* rgb */ color: rgb(27, 42, 99);
/* oklch */ color: oklch(30.9% 0.103 268.6);

Tailwind

colors: {
  custom: {
    50: '#626390',
    500: '#1b2a63',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a63;
$custom-light: #626390;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a63",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 99
  },
  "hsl": {
    "h": 227.5,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.30895,
    "c": 0.10254,
    "h": 268.6
  },
  "luminance": 0.0279
}

Semantic roles & 50–950 ramp

primary

#1B2A63

secondary

#988641

accent

#C147E0

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #1B2A63

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

Preview Lab → · Contrast checker → · Palette generator →