#1B2B8E#1B2B8E

#1B2B8E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.163 H 268.6°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B8E
RGB	rgb(27, 43, 142)
HSL	hsl(232, 68%, 33%)
HSV	hsv(232, 81%, 56%)
CMYK	cmyk(81%, 69.7%, 0%, 44.3%)
CIE-LAB	lab(23.38, 31.49, -56.20)
CIE-LCH	lch(23.38, 64.42, 299.26°)
OKLab	oklab(35.22% -0.004 -0.1628)
OKLCH	oklch(35.22% 0.163 268.6)
XYZ	xyz(6.1967, 3.9130, 26.0146)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B8E #8E7E1B

analogous

#1B648E #1B2B8E #441B8E

triadic

#1B2B8E #8E1B2B #2B8E1B

tetradic

#1B2B8E #8E1B64 #8E7E1B #1B8E44

square

#1B2B8E #8E1B64 #8E7E1B #1B8E44

split-complementary

#1B2B8E #8E441B #648E1B

monochromatic

#070C27 #111B5B #1B2B8E #253BC1 #475CDC

Accessibility & contrast

On white

11.78

#1B2B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B8E

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B8E	#FFFFFF	#000000	##FFFFFF
##1B2B8E	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00328C

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2b8e;
/* rgb */ color: rgb(27, 43, 142);
/* oklch */ color: oklch(35.2% 0.163 268.6);

Tailwind

colors: {
  custom: {
    50: '#6d64b0',
    500: '#1b2b8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b8e;
$custom-light: #6d64b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b8e",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 142
  },
  "hsl": {
    "h": 231.652,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35215,
    "c": 0.16281,
    "h": 268.6
  },
  "luminance": 0.03914
}

Semantic roles & 50–950 ramp

primary

#1B2B8E

secondary

#BEAD47

accent

#D33DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2B8E

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

Preview Lab → · Contrast checker → · Palette generator →