#1B347E#1B347E

#1B347E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.129 H 265.8°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B347E
RGB	rgb(27, 52, 126)
HSL	hsl(225, 65%, 30%)
HSV	hsv(225, 79%, 49%)
CMYK	cmyk(78.6%, 58.7%, 0%, 50.6%)
CIE-LAB	lab(24.30, 19.02, -44.68)
CIE-LCH	lch(24.30, 48.56, 293.05°)
OKLab	oklab(35.45% -0.0094 -0.1289)
OKLCH	oklch(35.45% 0.129 265.8)
XYZ	xyz(5.4446, 4.1947, 20.2573)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B347E #7E651B

analogous

#1B667E #1B347E #331B7E

triadic

#1B347E #7E1B34 #347E1B

tetradic

#1B347E #7E1B66 #7E651B #1B7E33

square

#1B347E #7E1B66 #7E651B #1B7E33

split-complementary

#1B347E #7E331B #667E1B

monochromatic

#050A19 #101F4C #1B347E #2649B0 #3E64D6

Accessibility & contrast

On white

11.42

#1B347E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B347E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B347E

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B347E	#FFFFFF	#000000	##FFFFFF
##1B347E	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b347e;
/* rgb */ color: rgb(27, 52, 126);
/* oklch */ color: oklch(35.4% 0.129 265.8);

Tailwind

colors: {
  custom: {
    50: '#686ba4',
    500: '#1b347e',
    950: '#000000',
  },
}

SCSS

$custom: #1b347e;
$custom-light: #686ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b347e",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 126
  },
  "hsl": {
    "h": 224.848,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.35446,
    "c": 0.12926,
    "h": 265.8
  },
  "luminance": 0.04195
}

Semantic roles & 50–950 ramp

primary

#1B347E

secondary

#B29643

accent

#BD40E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B347E

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

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