#1B3EA0#1B3EA0

#1B3EA0 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.164 H 264.8°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B3EA0
RGB	rgb(27, 62, 160)
HSL	hsl(224, 71%, 37%)
HSV	hsv(224, 83%, 63%)
CMYK	cmyk(83.1%, 61.2%, 0%, 37.3%)
CIE-LAB	lab(29.95, 25.69, -56.47)
CIE-LCH	lch(29.95, 62.04, 294.47°)
OKLab	oklab(40.57% -0.0149 -0.1633)
OKLCH	oklch(40.57% 0.164 264.8)
XYZ	xyz(8.5175, 6.2153, 34.0016)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3EA0 #A07D1B

analogous

#1B81A0 #1B3EA0 #3B1BA0

triadic

#1B3EA0 #A01B3E #3EA01B

tetradic

#1B3EA0 #A01B81 #A07D1B #1BA03B

square

#1B3EA0 #A01B81 #A07D1B #1BA03B

split-complementary

#1B3EA0 #A03B1B #81A01B

monochromatic

#091537 #122A6C #1B3EA0 #2452D4 #5379E2

Accessibility & contrast

On white

9.36

#1B3EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B3EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3EA0

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3EA0	#FFFFFF	#000000	##FFFFFF
##1B3EA0	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b3ea0;
/* rgb */ color: rgb(27, 62, 160);
/* oklch */ color: oklch(40.6% 0.164 264.8);

Tailwind

colors: {
  custom: {
    50: '#7072bd',
    500: '#1b3ea0',
    950: '#000000',
  },
}

SCSS

$custom: #1b3ea0;
$custom-light: #7072bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3ea0",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 160
  },
  "hsl": {
    "h": 224.211,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40568,
    "c": 0.16403,
    "h": 264.8
  },
  "luminance": 0.06216
}

Semantic roles & 50–950 ramp

primary

#1B3EA0

secondary

#C5A752

accent

#BF3AEE

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B3EA0

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

Preview Lab → · Contrast checker → · Palette generator →