#1B3E8E#1B3E8E

#1B3E8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.139 H 263.5°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E8E
RGB	rgb(27, 62, 142)
HSL	hsl(222, 68%, 33%)
HSV	hsv(222, 81%, 56%)
CMYK	cmyk(81%, 56.3%, 0%, 44.3%)
CIE-LAB	lab(28.46, 18.50, -47.90)
CIE-LCH	lch(28.46, 51.35, 291.11°)
OKLab	oklab(38.99% -0.0158 -0.1382)
OKLCH	oklch(38.99% 0.139 263.5)
XYZ	xyz(7.0554, 5.6304, 26.3009)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E8E #8E6B1B

analogous

#1B778E #1B3E8E #311B8E

triadic

#1B3E8E #8E1B3E #3E8E1B

tetradic

#1B3E8E #8E1B77 #8E6B1B #1B8E31

square

#1B3E8E #8E1B77 #8E6B1B #1B8E31

split-complementary

#1B3E8E #8E311B #778E1B

monochromatic

#071127 #11285B #1B3E8E #2554C1 #4775DC

Accessibility & contrast

On white

9.88

#1B3E8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1B3E8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E8E

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E8E	#FFFFFF	#000000	##FFFFFF
##1B3E8E	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)

#004991

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b3e8e;
/* rgb */ color: rgb(27, 62, 142);
/* oklch */ color: oklch(39.0% 0.139 263.5);

Tailwind

colors: {
  custom: {
    50: '#6b72b0',
    500: '#1b3e8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e8e;
$custom-light: #6b72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e8e",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 142
  },
  "hsl": {
    "h": 221.739,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38985,
    "c": 0.1391,
    "h": 263.5
  },
  "luminance": 0.05631
}

Semantic roles & 50–950 ramp

primary

#1B3E8E

secondary

#BE9A47

accent

#B63DEB

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1B3E8E

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

Preview Lab → · Contrast checker → · Palette generator →