#1B4298#1B4298

#1B4298 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.7% C 0.148 H 263.1°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B4298
RGB	rgb(27, 66, 152)
HSL	hsl(221, 70%, 35%)
HSV	hsv(221, 82%, 60%)
CMYK	cmyk(82.2%, 56.6%, 0%, 40.4%)
CIE-LAB	lab(30.39, 19.77, -50.89)
CIE-LCH	lch(30.39, 54.60, 291.23°)
OKLab	oklab(40.69% -0.0178 -0.1469)
OKLCH	oklch(40.69% 0.148 263.1)
XYZ	xyz(8.0657, 6.3955, 30.5090)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4298 #98711B

analogous

#1B8098 #1B4298 #331B98

triadic

#1B4298 #981B42 #42981B

tetradic

#1B4298 #981B80 #98711B #1B9833

square

#1B4298 #981B80 #98711B #1B9833

split-complementary

#1B4298 #98331B #80981B

monochromatic

#091530 #122B64 #1B4298 #2459CC #4E7BE0

Accessibility & contrast

On white

9.21

#1B4298 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1B4298 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4298

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4298	#FFFFFF	#000000	##FFFFFF
##1B4298	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9B

Deuteranopia (green-blind)

#004296

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4298;
/* rgb */ color: rgb(27, 66, 152);
/* oklch */ color: oklch(40.7% 0.148 263.1);

Tailwind

colors: {
  custom: {
    50: '#6e75b7',
    500: '#1b4298',
    950: '#000000',
  },
}

SCSS

$custom: #1b4298;
$custom-light: #6e75b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4298",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 152
  },
  "hsl": {
    "h": 221.28,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40691,
    "c": 0.148,
    "h": 263.1
  },
  "luminance": 0.06396
}

Semantic roles & 50–950 ramp

primary

#1B4298

secondary

#C29D4D

accent

#B53BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4298

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

Preview Lab → · Contrast checker → · Palette generator →