#1B2A90#1B2A90

#1B2A90 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.167 H 268.7°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A90
RGB	rgb(27, 42, 144)
HSL	hsl(232, 68%, 34%)
HSV	hsv(232, 81%, 56%)
CMYK	cmyk(81.3%, 70.8%, 0%, 43.5%)
CIE-LAB	lab(23.34, 32.90, -57.51)
CIE-LCH	lch(23.34, 66.25, 299.77°)
OKLab	oklab(35.25% -0.0037 -0.1666)
OKLCH	oklch(35.25% 0.167 268.7)
XYZ	xyz(6.3123, 3.9018, 26.8006)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A90 #90811B

analogous

#1B6490 #1B2A90 #461B90

triadic

#1B2A90 #901B2A #2A901B

tetradic

#1B2A90 #901B64 #90811B #1B9046

square

#1B2A90 #901B64 #90811B #1B9046

split-complementary

#1B2A90 #90461B #64901B

monochromatic

#080C29 #111B5C #1B2A90 #2539C4 #495CDD

Accessibility & contrast

On white

11.79

#1B2A90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2A90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A90

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A90	#FFFFFF	#000000	##FFFFFF
##1B2A90	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D93

Deuteranopia (green-blind)

#00328E

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2a90;
/* rgb */ color: rgb(27, 42, 144);
/* oklch */ color: oklch(35.2% 0.167 268.7);

Tailwind

colors: {
  custom: {
    50: '#6d64b2',
    500: '#1b2a90',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a90;
$custom-light: #6d64b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a90",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 144
  },
  "hsl": {
    "h": 232.308,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.35249,
    "c": 0.16661,
    "h": 268.7
  },
  "luminance": 0.03903
}

Semantic roles & 50–950 ramp

primary

#1B2A90

secondary

#BFAF48

accent

#D53DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2A90

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

Preview Lab → · Contrast checker → · Palette generator →