#1B2D90#1B2D90

#1B2D90 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.8% C 0.163 H 268.2°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D90
RGB	rgb(27, 45, 144)
HSL	hsl(231, 68%, 34%)
HSV	hsv(231, 81%, 56%)
CMYK	cmyk(81.3%, 68.7%, 0%, 43.5%)
CIE-LAB	lab(24.07, 30.93, -56.31)
CIE-LCH	lch(24.07, 64.24, 298.78°)
OKLab	oklab(35.78% -0.0051 -0.1631)
OKLCH	oklch(35.78% 0.163 268.2)
XYZ	xyz(6.4227, 4.1227, 26.8374)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D90 #907E1B

analogous

#1B6790 #1B2D90 #431B90

triadic

#1B2D90 #901B2D #2D901B

tetradic

#1B2D90 #901B67 #907E1B #1B9043

square

#1B2D90 #901B67 #907E1B #1B9043

split-complementary

#1B2D90 #90431B #67901B

monochromatic

#080D29 #111D5C #1B2D90 #253DC4 #495FDD

Accessibility & contrast

On white

11.51

#1B2D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1B2D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D90

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D90	#FFFFFF	#000000	##FFFFFF
##1B2D90	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F93

Deuteranopia (green-blind)

#00348E

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2d90;
/* rgb */ color: rgb(27, 45, 144);
/* oklch */ color: oklch(35.8% 0.163 268.2);

Tailwind

colors: {
  custom: {
    50: '#6d66b2',
    500: '#1b2d90',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d90;
$custom-light: #6d66b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d90",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 144
  },
  "hsl": {
    "h": 230.769,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.35779,
    "c": 0.16314,
    "h": 268.2
  },
  "luminance": 0.04123
}

Semantic roles & 50–950 ramp

primary

#1B2D90

secondary

#BFAC48

accent

#D03DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B2D90

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

Preview Lab → · Contrast checker → · Palette generator →