#1B3E9F#1B3E9F

#1B3E9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.163 H 264.7°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E9F
RGB	rgb(27, 62, 159)
HSL	hsl(224, 71%, 36%)
HSV	hsv(224, 83%, 62%)
CMYK	cmyk(83%, 61%, 0%, 37.6%)
CIE-LAB	lab(29.86, 25.30, -56.00)
CIE-LCH	lch(29.86, 61.45, 294.31°)
OKLab	oklab(40.48% -0.0149 -0.162)
OKLCH	oklch(40.48% 0.163 264.7)
XYZ	xyz(8.4304, 6.1804, 33.5428)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E9F #9F7C1B

analogous

#1B809F #1B3E9F #3A1B9F

triadic

#1B3E9F #9F1B3E #3E9F1B

tetradic

#1B3E9F #9F1B80 #9F7C1B #1B9F3A

square

#1B3E9F #9F1B80 #9F7C1B #1B9F3A

split-complementary

#1B3E9F #9F3A1B #809F1B

monochromatic

#091536 #122A6B #1B3E9F #2452D3 #5379E2

Accessibility & contrast

On white

9.39

#1B3E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B3E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E9F

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E9F	#FFFFFF	#000000	##FFFFFF
##1B3E9F	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b3e9f;
/* rgb */ color: rgb(27, 62, 159);
/* oklch */ color: oklch(40.5% 0.163 264.7);

Tailwind

colors: {
  custom: {
    50: '#7072bc',
    500: '#1b3e9f',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e9f;
$custom-light: #7072bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e9f",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 224.091,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.40477,
    "c": 0.16267,
    "h": 264.7
  },
  "luminance": 0.06181
}

Semantic roles & 50–950 ramp

primary

#1B3E9F

secondary

#C5A651

accent

#BE3AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B3E9F

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

Preview Lab → · Contrast checker → · Palette generator →