#1B3EA1#1B3EA1

#1B3EA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.165 H 264.8°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B3EA1
RGB	rgb(27, 62, 161)
HSL	hsl(224, 71%, 37%)
HSV	hsv(224, 83%, 63%)
CMYK	cmyk(83.2%, 61.5%, 0%, 36.9%)
CIE-LAB	lab(30.04, 26.09, -56.93)
CIE-LCH	lch(30.04, 62.62, 294.62°)
OKLab	oklab(40.66% -0.0149 -0.1647)
OKLCH	oklch(40.66% 0.165 264.8)
XYZ	xyz(8.6054, 6.2504, 34.4642)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3EA1 #A17E1B

analogous

#1B81A1 #1B3EA1 #3B1BA1

triadic

#1B3EA1 #A11B3E #3EA11B

tetradic

#1B3EA1 #A11B81 #A17E1B #1BA13B

square

#1B3EA1 #A11B81 #A17E1B #1BA13B

split-complementary

#1B3EA1 #A13B1B #81A11B

monochromatic

#091638 #122A6D #1B3EA1 #2452D5 #5479E2

Accessibility & contrast

On white

9.33

#1B3EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1B3EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3EA1

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3EA1	#FFFFFF	#000000	##FFFFFF
##1B3EA1	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00419F

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b3ea1;
/* rgb */ color: rgb(27, 62, 161);
/* oklch */ color: oklch(40.7% 0.165 264.8);

Tailwind

colors: {
  custom: {
    50: '#7072be',
    500: '#1b3ea1',
    950: '#000000',
  },
}

SCSS

$custom: #1b3ea1;
$custom-light: #7072be;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3ea1",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 161
  },
  "hsl": {
    "h": 224.328,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.40659,
    "c": 0.16538,
    "h": 264.8
  },
  "luminance": 0.06251
}

Semantic roles & 50–950 ramp

primary

#1B3EA1

secondary

#C5A752

accent

#BF3AEE

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B3EA1

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

Preview Lab → · Contrast checker → · Palette generator →