#1B347C#1B347C

#1B347C is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.126 H 265.7°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B347C
RGB	rgb(27, 52, 124)
HSL	hsl(225, 64%, 30%)
HSV	hsv(225, 78%, 49%)
CMYK	cmyk(78.2%, 58.1%, 0%, 51.4%)
CIE-LAB	lab(24.14, 18.20, -43.69)
CIE-LCH	lch(24.14, 47.33, 292.62°)
OKLab	oklab(35.27% -0.0095 -0.126)
OKLCH	oklch(35.27% 0.126 265.7)
XYZ	xyz(5.3168, 4.1436, 19.5845)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B347C #7C631B

analogous

#1B657C #1B347C #331B7C

triadic

#1B347C #7C1B34 #347C1B

tetradic

#1B347C #7C1B65 #7C631B #1B7C33

square

#1B347C #7C1B65 #7C631B #1B7C33

split-complementary

#1B347C #7C331B #657C1B

monochromatic

#050B19 #101F4A #1B347C #2649AE #3D64D5

Accessibility & contrast

On white

11.48

#1B347C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1B347C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B347C

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B347C	#FFFFFF	#000000	##FFFFFF
##1B347C	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7E

Deuteranopia (green-blind)

#00357B

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b347c;
/* rgb */ color: rgb(27, 52, 124);
/* oklch */ color: oklch(35.3% 0.126 265.7);

Tailwind

colors: {
  custom: {
    50: '#676ba3',
    500: '#1b347c',
    950: '#000000',
  },
}

SCSS

$custom: #1b347c;
$custom-light: #676ba3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b347c",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 124
  },
  "hsl": {
    "h": 224.536,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35271,
    "c": 0.12636,
    "h": 265.7
  },
  "luminance": 0.04144
}

Semantic roles & 50–950 ramp

primary

#1B347C

secondary

#B09443

accent

#BC41E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B347C

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

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