#1B2A7C#1B2A7C

#1B2A7C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.139 H 269.1°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A7C
RGB	rgb(27, 42, 124)
HSL	hsl(231, 64%, 30%)
HSV	hsv(231, 78%, 49%)
CMYK	cmyk(78.2%, 66.1%, 0%, 51.4%)
CIE-LAB	lab(21.37, 25.22, -48.21)
CIE-LCH	lch(21.37, 54.41, 297.62°)
OKLab	oklab(33.21% -0.0022 -0.1394)
OKLCH	oklch(33.21% 0.139 269.1)
XYZ	xyz(4.9168, 3.3436, 19.4511)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A7C #7C6D1B

analogous

#1B5A7C #1B2A7C #3D1B7C

triadic

#1B2A7C #7C1B2A #2A7C1B

tetradic

#1B2A7C #7C1B5A #7C6D1B #1B7C3D

square

#1B2A7C #7C1B5A #7C6D1B #1B7C3D

split-complementary

#1B2A7C #7C3D1B #5A7C1B

monochromatic

#050919 #10194A #1B2A7C #263BAE #3D54D5

Accessibility & contrast

On white

12.58

#1B2A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B2A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A7C

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A7C	#FFFFFF	#000000	##FFFFFF
##1B2A7C	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387F

Deuteranopia (green-blind)

#002F7A

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2a7c;
/* rgb */ color: rgb(27, 42, 124);
/* oklch */ color: oklch(33.2% 0.139 269.1);

Tailwind

colors: {
  custom: {
    50: '#6863a3',
    500: '#1b2a7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a7c;
$custom-light: #6863a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a7c",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 124
  },
  "hsl": {
    "h": 230.722,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.33209,
    "c": 0.13942,
    "h": 269.1
  },
  "luminance": 0.03344
}

Semantic roles & 50–950 ramp

primary

#1B2A7C

secondary

#B09F43

accent

#CD41E7

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2A7C

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

Preview Lab → · Contrast checker → · Palette generator →