#1B2D8C#1B2D8C

#1B2D8C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.158 H 268.2°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D8C
RGB	rgb(27, 45, 140)
HSL	hsl(230, 68%, 33%)
HSV	hsv(230, 81%, 55%)
CMYK	cmyk(80.7%, 67.9%, 0%, 45.1%)
CIE-LAB	lab(23.68, 29.40, -54.47)
CIE-LCH	lch(23.68, 61.90, 298.36°)
OKLab	oklab(35.37% -0.0049 -0.1577)
OKLCH	oklch(35.37% 0.158 268.2)
XYZ	xyz(6.1224, 4.0025, 25.2558)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D8C #8C7A1B

analogous

#1B668C #1B2D8C #411B8C

triadic

#1B2D8C #8C1B2D #2D8C1B

tetradic

#1B2D8C #8C1B66 #8C7A1B #1B8C41

square

#1B2D8C #8C1B66 #8C7A1B #1B8C41

split-complementary

#1B2D8C #8C411B #668C1B

monochromatic

#070C25 #111D59 #1B2D8C #253DBF #465EDB

Accessibility & contrast

On white

11.66

#1B2D8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1B2D8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D8C

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D8C	#FFFFFF	#000000	##FFFFFF
##1B2D8C	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8F

Deuteranopia (green-blind)

#00338A

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2d8c;
/* rgb */ color: rgb(27, 45, 140);
/* oklch */ color: oklch(35.4% 0.158 268.2);

Tailwind

colors: {
  custom: {
    50: '#6c66af',
    500: '#1b2d8c',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d8c;
$custom-light: #6c66af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d8c",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 140
  },
  "hsl": {
    "h": 230.442,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35372,
    "c": 0.15778,
    "h": 268.2
  },
  "luminance": 0.04003
}

Semantic roles & 50–950 ramp

primary

#1B2D8C

secondary

#BDAA46

accent

#CF3DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1B2D8C

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

Preview Lab → · Contrast checker → · Palette generator →