#1B3396#1B3396

#1B3396 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.164 H 267.0°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B3396
RGB	rgb(27, 51, 150)
HSL	hsl(228, 69%, 35%)
HSV	hsv(228, 82%, 59%)
CMYK	cmyk(82%, 66%, 0%, 41.2%)
CIE-LAB	lab(26.16, 29.23, -56.57)
CIE-LCH	lch(26.16, 63.68, 297.32°)
OKLab	oklab(37.49% -0.0086 -0.1638)
OKLCH	oklch(37.49% 0.164 267)
XYZ	xyz(7.1389, 4.8018, 29.3988)
Luminance	0.0480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3396 #967E1B

analogous

#1B7096 #1B3396 #411B96

triadic

#1B3396 #961B33 #33961B

tetradic

#1B3396 #961B70 #967E1B #1B9641

square

#1B3396 #961B70 #967E1B #1B9641

split-complementary

#1B3396 #96411B #70961B

monochromatic

#08102E #122162 #1B3396 #2445CA #4D69DF

Accessibility & contrast

On white

10.71

#1B3396 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1B3396 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3396

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3396	#FFFFFF	#000000	##FFFFFF
##1B3396	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004499

Deuteranopia (green-blind)

#003894

Tritanopia (blue-blind)

#004D5F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3396;
/* rgb */ color: rgb(27, 51, 150);
/* oklch */ color: oklch(37.5% 0.164 267.0);

Tailwind

colors: {
  custom: {
    50: '#6e6ab6',
    500: '#1b3396',
    950: '#000000',
  },
}

SCSS

$custom: #1b3396;
$custom-light: #6e6ab6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3396",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 150
  },
  "hsl": {
    "h": 228.293,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.37485,
    "c": 0.16402,
    "h": 267
  },
  "luminance": 0.04803
}

Semantic roles & 50–950 ramp

primary

#1B3396

secondary

#C1AA4C

accent

#CA3BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1B3396

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

Preview Lab → · Contrast checker → · Palette generator →