#1B3E97#1B3E97

#1B3E97 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.152 H 264.2°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E97
RGB	rgb(27, 62, 151)
HSL	hsl(223, 70%, 35%)
HSV	hsv(223, 82%, 59%)
CMYK	cmyk(82.1%, 58.9%, 0%, 40.8%)
CIE-LAB	lab(29.19, 22.12, -52.24)
CIE-LCH	lch(29.19, 56.73, 292.95°)
OKLab	oklab(39.76% -0.0152 -0.1509)
OKLCH	oklch(39.76% 0.152 264.2)
XYZ	xyz(7.7585, 5.9117, 30.0043)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E97 #97741B

analogous

#1B7C97 #1B3E97 #361B97

triadic

#1B3E97 #971B3E #3E971B

tetradic

#1B3E97 #971B7C #97741B #1B9736

square

#1B3E97 #971B7C #97741B #1B9736

split-complementary

#1B3E97 #97361B #7C971B

monochromatic

#08132F #122963 #1B3E97 #2453CB #4D76DF

Accessibility & contrast

On white

9.62

#1B3E97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1B3E97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E97

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E97	#FFFFFF	#000000	##FFFFFF
##1B3E97	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#003F95

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3e97;
/* rgb */ color: rgb(27, 62, 151);
/* oklch */ color: oklch(39.8% 0.152 264.2);

Tailwind

colors: {
  custom: {
    50: '#6e72b6',
    500: '#1b3e97',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e97;
$custom-light: #6e72b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e97",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 151
  },
  "hsl": {
    "h": 223.065,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39762,
    "c": 0.1517,
    "h": 264.2
  },
  "luminance": 0.05913
}

Semantic roles & 50–950 ramp

primary

#1B3E97

secondary

#C1A04C

accent

#BA3BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3E97

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

Preview Lab → · Contrast checker → · Palette generator →