#1B4A98#1B4A98

#1B4A98 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.4% C 0.138 H 260.1°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A98
RGB	rgb(27, 74, 152)
HSL	hsl(217, 70%, 35%)
HSV	hsv(217, 82%, 60%)
CMYK	cmyk(82.2%, 51.3%, 0%, 40.4%)
CIE-LAB	lab(32.69, 14.29, -47.16)
CIE-LCH	lch(32.69, 49.28, 286.86°)
OKLab	oklab(42.44% -0.0237 -0.1358)
OKLCH	oklch(42.44% 0.138 260.1)
XYZ	xyz(8.5662, 7.3965, 30.6759)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A98 #98691B

analogous

#1B8898 #1B4A98 #2B1B98

triadic

#1B4A98 #981B4A #4A981B

tetradic

#1B4A98 #981B88 #98691B #1B982B

square

#1B4A98 #981B88 #98691B #1B982B

split-complementary

#1B4A98 #982B1B #88981B

monochromatic

#091730 #123164 #1B4A98 #2463CC #4E85E0

Accessibility & contrast

On white

8.47

#1B4A98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B4A98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A98

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A98	#FFFFFF	#000000	##FFFFFF
##1B4A98	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18539B

Deuteranopia (green-blind)

#004896

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4a98;
/* rgb */ color: rgb(27, 74, 152);
/* oklch */ color: oklch(42.4% 0.138 260.1);

Tailwind

colors: {
  custom: {
    50: '#6d7bb7',
    500: '#1b4a98',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a98;
$custom-light: #6d7bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a98",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 152
  },
  "hsl": {
    "h": 217.44,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.42443,
    "c": 0.13783,
    "h": 260.1
  },
  "luminance": 0.07398
}

Semantic roles & 50–950 ramp

primary

#1B4A98

secondary

#C2964D

accent

#AA3BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4A98

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

Preview Lab → · Contrast checker → · Palette generator →