#1B2B7C#1B2B7C

#1B2B7C is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.138 H 268.8°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B7C
RGB	rgb(27, 43, 124)
HSL	hsl(230, 64%, 30%)
HSV	hsv(230, 78%, 49%)
CMYK	cmyk(78.2%, 65.3%, 0%, 51.4%)
CIE-LAB	lab(21.64, 24.53, -47.77)
CIE-LCH	lch(21.64, 53.70, 297.18°)
OKLab	oklab(33.4% -0.0029 -0.1381)
OKLCH	oklch(33.4% 0.138 268.8)
XYZ	xyz(4.9527, 3.4155, 19.4631)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B7C #7C6C1B

analogous

#1B5C7C #1B2B7C #3C1B7C

triadic

#1B2B7C #7C1B2B #2B7C1B

tetradic

#1B2B7C #7C1B5C #7C6C1B #1B7C3C

square

#1B2B7C #7C1B5C #7C6C1B #1B7C3C

split-complementary

#1B2B7C #7C3C1B #5C7C1B

monochromatic

#050919 #101A4A #1B2B7C #263CAE #3D56D5

Accessibility & contrast

On white

12.48

#1B2B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B7C

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B7C	#FFFFFF	#000000	##FFFFFF
##1B2B7C	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397F

Deuteranopia (green-blind)

#002F7A

Tritanopia (blue-blind)

#00404F

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2b7c;
/* rgb */ color: rgb(27, 43, 124);
/* oklch */ color: oklch(33.4% 0.138 268.8);

Tailwind

colors: {
  custom: {
    50: '#6864a3',
    500: '#1b2b7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b7c;
$custom-light: #6864a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b7c",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 124
  },
  "hsl": {
    "h": 230.103,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.33404,
    "c": 0.13814,
    "h": 268.8
  },
  "luminance": 0.03416
}

Semantic roles & 50–950 ramp

primary

#1B2B7C

secondary

#B09E43

accent

#CC41E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2B7C

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

Preview Lab → · Contrast checker → · Palette generator →