#1B4297#1B4297

#1B4297 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.6% C 0.147 H 263.0°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#1B4297
RGB	rgb(27, 66, 151)
HSL	hsl(221, 70%, 35%)
HSV	hsv(221, 82%, 59%)
CMYK	cmyk(82.1%, 56.3%, 0%, 40.8%)
CIE-LAB	lab(30.31, 19.36, -50.41)
CIE-LCH	lch(30.31, 54.00, 291.01°)
OKLab	oklab(40.61% -0.0179 -0.1455)
OKLCH	oklch(40.61% 0.147 263)
XYZ	xyz(7.9841, 6.3629, 30.0795)
Luminance	0.0636 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4297 #97701B

analogous

#1B8097 #1B4297 #321B97

triadic

#1B4297 #971B42 #42971B

tetradic

#1B4297 #971B80 #97701B #1B9732

square

#1B4297 #971B80 #97701B #1B9732

split-complementary

#1B4297 #97321B #80971B

monochromatic

#08152F #122B63 #1B4297 #2459CB #4D7BDF

Accessibility & contrast

On white

9.24

#1B4297 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#1B4297 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4297

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4297	#FFFFFF	#000000	##FFFFFF
##1B4297	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9A

Deuteranopia (green-blind)

#004295

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4297;
/* rgb */ color: rgb(27, 66, 151);
/* oklch */ color: oklch(40.6% 0.147 263.0);

Tailwind

colors: {
  custom: {
    50: '#6d75b6',
    500: '#1b4297',
    950: '#000000',
  },
}

SCSS

$custom: #1b4297;
$custom-light: #6d75b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4297",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 151
  },
  "hsl": {
    "h": 221.129,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.40607,
    "c": 0.14661,
    "h": 263
  },
  "luminance": 0.06364
}

Semantic roles & 50–950 ramp

primary

#1B4297

secondary

#C19D4C

accent

#B53BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4297

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

Preview Lab → · Contrast checker → · Palette generator →