#1B4198#1B4198

#1B4198 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.5% C 0.149 H 263.4°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B4198
RGB	rgb(27, 65, 152)
HSL	hsl(222, 70%, 35%)
HSV	hsv(222, 82%, 60%)
CMYK	cmyk(82.2%, 57.2%, 0%, 40.4%)
CIE-LAB	lab(30.11, 20.46, -51.35)
CIE-LCH	lch(30.11, 55.28, 291.72°)
OKLab	oklab(40.48% -0.0172 -0.1483)
OKLCH	oklch(40.48% 0.149 263.4)
XYZ	xyz(8.0078, 6.2796, 30.4897)
Luminance	0.0628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4198 #98721B

analogous

#1B7F98 #1B4198 #341B98

triadic

#1B4198 #981B41 #41981B

tetradic

#1B4198 #981B7F #98721B #1B9834

square

#1B4198 #981B7F #98721B #1B9834

split-complementary

#1B4198 #98341B #7F981B

monochromatic

#091530 #122B64 #1B4198 #2457CC #4E7AE0

Accessibility & contrast

On white

9.31

#1B4198 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B4198 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4198

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4198	#FFFFFF	#000000	##FFFFFF
##1B4198	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9B

Deuteranopia (green-blind)

#004196

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4198;
/* rgb */ color: rgb(27, 65, 152);
/* oklch */ color: oklch(40.5% 0.149 263.4);

Tailwind

colors: {
  custom: {
    50: '#6e75b7',
    500: '#1b4198',
    950: '#000000',
  },
}

SCSS

$custom: #1b4198;
$custom-light: #6e75b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4198",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 152
  },
  "hsl": {
    "h": 221.76,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40479,
    "c": 0.14928,
    "h": 263.4
  },
  "luminance": 0.06281
}

Semantic roles & 50–950 ramp

primary

#1B4198

secondary

#C29E4D

accent

#B73BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4198

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

Preview Lab → · Contrast checker → · Palette generator →