#1B3E98#1B3E98

#1B3E98 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.153 H 264.3°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E98
RGB	rgb(27, 62, 152)
HSL	hsl(223, 70%, 35%)
HSV	hsv(223, 82%, 60%)
CMYK	cmyk(82.2%, 59.2%, 0%, 40.4%)
CIE-LAB	lab(29.27, 22.52, -52.71)
CIE-LCH	lch(29.27, 57.32, 293.13°)
OKLab	oklab(39.85% -0.0152 -0.1523)
OKLCH	oklch(39.85% 0.153 264.3)
XYZ	xyz(7.8401, 5.9443, 30.4338)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E98 #98751B

analogous

#1B7C98 #1B3E98 #371B98

triadic

#1B3E98 #981B3E #3E981B

tetradic

#1B3E98 #981B7C #98751B #1B9837

square

#1B3E98 #981B7C #98751B #1B9837

split-complementary

#1B3E98 #98371B #7C981B

monochromatic

#091430 #122964 #1B3E98 #2453CC #4E77E0

Accessibility & contrast

On white

9.59

#1B3E98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1B3E98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E98

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E98	#FFFFFF	#000000	##FFFFFF
##1B3E98	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9B

Deuteranopia (green-blind)

#003F96

Tritanopia (blue-blind)

#005564

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3e98;
/* rgb */ color: rgb(27, 62, 152);
/* oklch */ color: oklch(39.9% 0.153 264.3);

Tailwind

colors: {
  custom: {
    50: '#6e72b7',
    500: '#1b3e98',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e98;
$custom-light: #6e72b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e98",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 152
  },
  "hsl": {
    "h": 223.2,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.3985,
    "c": 0.15309,
    "h": 264.3
  },
  "luminance": 0.05945
}

Semantic roles & 50–950 ramp

primary

#1B3E98

secondary

#C2A14D

accent

#BB3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3E98

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

Preview Lab → · Contrast checker → · Palette generator →