#1B2283#1B2283

#1B2283 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.5% C 0.158 H 270.6°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B2283
RGB	rgb(27, 34, 131)
HSL	hsl(236, 66%, 31%)
HSV	hsv(236, 79%, 51%)
CMYK	cmyk(79.4%, 74%, 0%, 48.6%)
CIE-LAB	lab(20.10, 33.20, -54.72)
CIE-LCH	lch(20.10, 64.00, 301.25°)
OKLab	oklab(32.5% 0.0017 -0.1584)
OKLCH	oklch(32.5% 0.158 270.6)
XYZ	xyz(5.1194, 3.0152, 21.7805)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2283 #837C1B

analogous

#1B5683 #1B2283 #481B83

triadic

#1B2283 #831B22 #22831B

tetradic

#1B2283 #831B56 #837C1B #1B8348

square

#1B2283 #831B56 #837C1B #1B8348

split-complementary

#1B2283 #83481B #56831B

monochromatic

#06081E #111550 #1B2283 #252FB6 #414BD8

Accessibility & contrast

On white

13.10

#1B2283 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B2283 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2283

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2283	#FFFFFF	#000000	##FFFFFF
##1B2283	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003686

Deuteranopia (green-blind)

#002B81

Tritanopia (blue-blind)

#003E50

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2283;
/* rgb */ color: rgb(27, 34, 131);
/* oklch */ color: oklch(32.5% 0.158 270.6);

Tailwind

colors: {
  custom: {
    50: '#6b5ea8',
    500: '#1b2283',
    950: '#000000',
  },
}

SCSS

$custom: #1b2283;
$custom-light: #6b5ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2283",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 131
  },
  "hsl": {
    "h": 235.962,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32504,
    "c": 0.15845,
    "h": 270.6
  },
  "luminance": 0.03016
}

Semantic roles & 50–950 ramp

primary

#1B2283

secondary

#B6AF43

accent

#DD3FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #1B2283

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

Preview Lab → · Contrast checker → · Palette generator →