#1B4797#1B4797

#1B4797 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 41.7% C 0.140 H 261.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B4797
RGB	rgb(27, 71, 151)
HSL	hsl(219, 70%, 35%)
HSV	hsv(219, 82%, 59%)
CMYK	cmyk(82.1%, 53%, 0%, 40.8%)
CIE-LAB	lab(31.75, 15.93, -48.08)
CIE-LCH	lch(31.75, 50.66, 288.33°)
OKLab	oklab(41.7% -0.0215 -0.1386)
OKLCH	oklch(41.7% 0.14 261.2)
XYZ	xyz(8.2891, 6.9729, 30.1812)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4797 #976B1B

analogous

#1B8597 #1B4797 #2D1B97

triadic

#1B4797 #971B47 #47971B

tetradic

#1B4797 #971B85 #976B1B #1B972D

square

#1B4797 #971B85 #976B1B #1B972D

split-complementary

#1B4797 #972D1B #85971B

monochromatic

#08162F #122F63 #1B4797 #245FCB #4D81DF

Accessibility & contrast

On white

8.77

#1B4797 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1B4797 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4797

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4797	#FFFFFF	#000000	##FFFFFF
##1B4797	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F519A

Deuteranopia (green-blind)

#004595

Tritanopia (blue-blind)

#005B68

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4797;
/* rgb */ color: rgb(27, 71, 151);
/* oklch */ color: oklch(41.7% 0.140 261.2);

Tailwind

colors: {
  custom: {
    50: '#6d79b6',
    500: '#1b4797',
    950: '#000000',
  },
}

SCSS

$custom: #1b4797;
$custom-light: #6d79b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4797",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 151
  },
  "hsl": {
    "h": 218.71,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.41696,
    "c": 0.14023,
    "h": 261.2
  },
  "luminance": 0.06974
}

Semantic roles & 50–950 ramp

primary

#1B4797

secondary

#C1984C

accent

#AE3BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4797

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

Preview Lab → · Contrast checker → · Palette generator →