#1B3B98#1B3B98

#1B3B98 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.157 H 265.2°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B3B98
RGB	rgb(27, 59, 152)
HSL	hsl(225, 70%, 35%)
HSV	hsv(225, 82%, 60%)
CMYK	cmyk(82.2%, 61.2%, 0%, 40.4%)
CIE-LAB	lab(28.45, 24.58, -54.05)
CIE-LCH	lch(28.45, 59.38, 294.45°)
OKLab	oklab(39.24% -0.0133 -0.1563)
OKLCH	oklch(39.24% 0.157 265.2)
XYZ	xyz(7.6815, 5.6270, 30.3810)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3B98 #98781B

analogous

#1B7998 #1B3B98 #3A1B98

triadic

#1B3B98 #981B3B #3B981B

tetradic

#1B3B98 #981B79 #98781B #1B983A

square

#1B3B98 #981B79 #98781B #1B983A

split-complementary

#1B3B98 #983A1B #79981B

monochromatic

#091330 #122764 #1B3B98 #244FCC #4E73E0

Accessibility & contrast

On white

9.88

#1B3B98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1B3B98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3B98

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3B98	#FFFFFF	#000000	##FFFFFF
##1B3B98	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499B

Deuteranopia (green-blind)

#003D96

Tritanopia (blue-blind)

#005363

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3b98;
/* rgb */ color: rgb(27, 59, 152);
/* oklch */ color: oklch(39.2% 0.157 265.2);

Tailwind

colors: {
  custom: {
    50: '#6e70b7',
    500: '#1b3b98',
    950: '#000000',
  },
}

SCSS

$custom: #1b3b98;
$custom-light: #6e70b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3b98",
  "rgb": {
    "r": 27,
    "g": 59,
    "b": 152
  },
  "hsl": {
    "h": 224.64,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39236,
    "c": 0.15687,
    "h": 265.2
  },
  "luminance": 0.05628
}

Semantic roles & 50–950 ramp

primary

#1B3B98

secondary

#C2A44D

accent

#BF3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3B98

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

Preview Lab → · Contrast checker → · Palette generator →