#1B4798#1B4798

#1B4798 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 41.8% C 0.142 H 261.3°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B4798
RGB	rgb(27, 71, 152)
HSL	hsl(219, 70%, 35%)
HSV	hsv(219, 82%, 60%)
CMYK	cmyk(82.2%, 53.3%, 0%, 40.4%)
CIE-LAB	lab(31.82, 16.34, -48.57)
CIE-LCH	lch(31.82, 51.25, 288.59°)
OKLab	oklab(41.78% -0.0214 -0.14)
OKLCH	oklch(41.78% 0.142 261.3)
XYZ	xyz(8.3707, 7.0055, 30.6107)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4798 #986C1B

analogous

#1B8598 #1B4798 #2E1B98

triadic

#1B4798 #981B47 #47981B

tetradic

#1B4798 #981B85 #986C1B #1B982E

square

#1B4798 #981B85 #986C1B #1B982E

split-complementary

#1B4798 #982E1B #85981B

monochromatic

#091630 #122F64 #1B4798 #245FCC #4E81E0

Accessibility & contrast

On white

8.75

#1B4798 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B4798 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4798

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4798	#FFFFFF	#000000	##FFFFFF
##1B4798	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C519B

Deuteranopia (green-blind)

#004596

Tritanopia (blue-blind)

#005B68

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4798;
/* rgb */ color: rgb(27, 71, 152);
/* oklch */ color: oklch(41.8% 0.142 261.3);

Tailwind

colors: {
  custom: {
    50: '#6d79b7',
    500: '#1b4798',
    950: '#000000',
  },
}

SCSS

$custom: #1b4798;
$custom-light: #6d79b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4798",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 152
  },
  "hsl": {
    "h": 218.88,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.41776,
    "c": 0.14163,
    "h": 261.3
  },
  "luminance": 0.07006
}

Semantic roles & 50–950 ramp

primary

#1B4798

secondary

#C2994D

accent

#AE3BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4798

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

Preview Lab → · Contrast checker → · Palette generator →