#1B2F90#1B2F90

#1B2F90 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.161 H 267.8°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F90
RGB	rgb(27, 47, 144)
HSL	hsl(230, 68%, 34%)
HSV	hsv(230, 81%, 56%)
CMYK	cmyk(81.3%, 67.4%, 0%, 43.5%)
CIE-LAB	lab(24.57, 29.59, -55.49)
CIE-LCH	lch(24.57, 62.88, 298.07°)
OKLab	oklab(36.14% -0.0062 -0.1606)
OKLCH	oklch(36.14% 0.161 267.8)
XYZ	xyz(6.5008, 4.2789, 26.8634)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F90 #907C1B

analogous

#1B6990 #1B2F90 #421B90

triadic

#1B2F90 #901B2F #2F901B

tetradic

#1B2F90 #901B69 #907C1B #1B9042

square

#1B2F90 #901B69 #907C1B #1B9042

split-complementary

#1B2F90 #90421B #69901B

monochromatic

#080D29 #111E5C #1B2F90 #2540C4 #4962DD

Accessibility & contrast

On white

11.31

#1B2F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1B2F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F90

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F90	#FFFFFF	#000000	##FFFFFF
##1B2F90	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004093

Deuteranopia (green-blind)

#00358E

Tritanopia (blue-blind)

#00495B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b2f90;
/* rgb */ color: rgb(27, 47, 144);
/* oklch */ color: oklch(36.1% 0.161 267.8);

Tailwind

colors: {
  custom: {
    50: '#6d67b1',
    500: '#1b2f90',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f90;
$custom-light: #6d67b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f90",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 144
  },
  "hsl": {
    "h": 229.744,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36144,
    "c": 0.16077,
    "h": 267.8
  },
  "luminance": 0.0428
}

Semantic roles & 50–950 ramp

primary

#1B2F90

secondary

#BFAA48

accent

#CD3DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B2F90

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

Preview Lab → · Contrast checker → · Palette generator →