#1B396F#1B396F

#1B396F is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.100 H 261.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B396F
RGB	rgb(27, 57, 111)
HSL	hsl(219, 61%, 27%)
HSV	hsv(219, 76%, 44%)
CMYK	cmyk(75.7%, 48.6%, 0%, 56.5%)
CIE-LAB	lab(24.66, 9.34, -34.58)
CIE-LCH	lch(24.66, 35.82, 285.12°)
OKLab	oklab(35.35% -0.0156 -0.0991)
OKLCH	oklch(35.35% 0.1 261.1)
XYZ	xyz(4.7833, 4.3065, 15.6150)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B396F #6F511B

analogous

#1B636F #1B396F #271B6F

triadic

#1B396F #6F1B39 #396F1B

tetradic

#1B396F #6F1B63 #6F511B #1B6F27

square

#1B396F #6F1B63 #6F511B #1B6F27

split-complementary

#1B396F #6F271B #636F1B

monochromatic

#060D19 #0F203E #1B396F #2752A0 #366CCE

Accessibility & contrast

On white

11.28

#1B396F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B396F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B396F

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B396F	#FFFFFF	#000000	##FFFFFF
##1B396F	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3F71

Deuteranopia (green-blind)

#0A376E

Tritanopia (blue-blind)

#00464E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b396f;
/* rgb */ color: rgb(27, 57, 111);
/* oklch */ color: oklch(35.4% 0.100 261.1);

Tailwind

colors: {
  custom: {
    50: '#646e99',
    500: '#1b396f',
    950: '#000000',
  },
}

SCSS

$custom: #1b396f;
$custom-light: #646e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b396f",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 111
  },
  "hsl": {
    "h": 218.571,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35354,
    "c": 0.10033,
    "h": 261.1
  },
  "luminance": 0.04307
}

Semantic roles & 50–950 ramp

primary

#1B396F

secondary

#A48142

accent

#AB44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1B396F

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

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