#1B3C98#1B3C98

#1B3C98 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.4% C 0.156 H 264.9°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B3C98
RGB	rgb(27, 60, 152)
HSL	hsl(224, 70%, 35%)
HSV	hsv(224, 82%, 60%)
CMYK	cmyk(82.2%, 60.5%, 0%, 40.4%)
CIE-LAB	lab(28.72, 23.89, -53.61)
CIE-LCH	lch(28.72, 58.69, 294.02°)
OKLab	oklab(39.44% -0.0139 -0.155)
OKLCH	oklch(39.44% 0.156 264.9)
XYZ	xyz(7.7333, 5.7308, 30.3982)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3C98 #98771B

analogous

#1B7A98 #1B3C98 #391B98

triadic

#1B3C98 #981B3C #3C981B

tetradic

#1B3C98 #981B7A #98771B #1B9839

square

#1B3C98 #981B7A #98771B #1B9839

split-complementary

#1B3C98 #98391B #7A981B

monochromatic

#091330 #122764 #1B3C98 #2451CC #4E74E0

Accessibility & contrast

On white

9.78

#1B3C98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1B3C98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3C98

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3C98	#FFFFFF	#000000	##FFFFFF
##1B3C98	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9B

Deuteranopia (green-blind)

#003E96

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b3c98;
/* rgb */ color: rgb(27, 60, 152);
/* oklch */ color: oklch(39.4% 0.156 264.9);

Tailwind

colors: {
  custom: {
    50: '#6e71b7',
    500: '#1b3c98',
    950: '#000000',
  },
}

SCSS

$custom: #1b3c98;
$custom-light: #6e71b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3c98",
  "rgb": {
    "r": 27,
    "g": 60,
    "b": 152
  },
  "hsl": {
    "h": 224.16,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39439,
    "c": 0.15561,
    "h": 264.9
  },
  "luminance": 0.05732
}

Semantic roles & 50–950 ramp

primary

#1B3C98

secondary

#C2A34D

accent

#BE3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3C98

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

Preview Lab → · Contrast checker → · Palette generator →