#1B2C8F#1B2C8F

#1B2C8F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.5% C 0.163 H 268.4°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C8F
RGB	rgb(27, 44, 143)
HSL	hsl(231, 68%, 33%)
HSV	hsv(231, 81%, 56%)
CMYK	cmyk(81.1%, 69.2%, 0%, 43.9%)
CIE-LAB	lab(23.73, 31.21, -56.26)
CIE-LCH	lch(23.73, 64.33, 299.02°)
OKLab	oklab(35.5% -0.0046 -0.1629)
OKLCH	oklch(35.5% 0.163 268.4)
XYZ	xyz(6.3089, 4.0168, 26.4241)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C8F #8F7E1B

analogous

#1B668F #1B2C8F #441B8F

triadic

#1B2C8F #8F1B2C #2C8F1B

tetradic

#1B2C8F #8F1B66 #8F7E1B #1B8F44

square

#1B2C8F #8F1B66 #8F7E1B #1B8F44

split-complementary

#1B2C8F #8F441B #668F1B

monochromatic

#080C28 #111C5C #1B2C8F #253CC2 #485EDC

Accessibility & contrast

On white

11.64

#1B2C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1B2C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C8F

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C8F	#FFFFFF	#000000	##FFFFFF
##1B2C8F	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E92

Deuteranopia (green-blind)

#00338D

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2c8f;
/* rgb */ color: rgb(27, 44, 143);
/* oklch */ color: oklch(35.5% 0.163 268.4);

Tailwind

colors: {
  custom: {
    50: '#6d65b1',
    500: '#1b2c8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c8f;
$custom-light: #6d65b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c8f",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 143
  },
  "hsl": {
    "h": 231.207,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35496,
    "c": 0.16297,
    "h": 268.4
  },
  "luminance": 0.04018
}

Semantic roles & 50–950 ramp

primary

#1B2C8F

secondary

#BEAD48

accent

#D23DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2C8F

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

Preview Lab → · Contrast checker → · Palette generator →