#1B369F#1B369F

#1B369F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.9% C 0.172 H 266.5°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B369F
RGB	rgb(27, 54, 159)
HSL	hsl(228, 71%, 36%)
HSV	hsv(228, 83%, 62%)
CMYK	cmyk(83%, 66%, 0%, 37.6%)
CIE-LAB	lab(27.77, 30.69, -59.42)
CIE-LCH	lch(27.77, 66.88, 297.31°)
OKLab	oklab(38.93% -0.0105 -0.1721)
OKLCH	oklch(38.93% 0.172 266.5)
XYZ	xyz(8.0270, 5.3736, 33.4083)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B369F #9F841B

analogous

#1B789F #1B369F #421B9F

triadic

#1B369F #9F1B36 #369F1B

tetradic

#1B369F #9F1B78 #9F841B #1B9F42

square

#1B369F #9F1B78 #9F841B #1B9F42

split-complementary

#1B369F #9F421B #789F1B

monochromatic

#091236 #12246B #1B369F #2448D3 #5370E2

Accessibility & contrast

On white

10.12

#1B369F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1B369F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B369F

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B369F	#FFFFFF	#000000	##FFFFFF
##1B369F	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A2

Deuteranopia (green-blind)

#003B9D

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b369f;
/* rgb */ color: rgb(27, 54, 159);
/* oklch */ color: oklch(38.9% 0.172 266.5);

Tailwind

colors: {
  custom: {
    50: '#706dbc',
    500: '#1b369f',
    950: '#000000',
  },
}

SCSS

$custom: #1b369f;
$custom-light: #706dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b369f",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 159
  },
  "hsl": {
    "h": 227.727,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.38929,
    "c": 0.17242,
    "h": 266.5
  },
  "luminance": 0.05375
}

Semantic roles & 50–950 ramp

primary

#1B369F

secondary

#C5AD51

accent

#C93AEE

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1B369F

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

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