#1B2D97#1B2D97

#1B2D97 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.5% C 0.172 H 268.1°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D97
RGB	rgb(27, 45, 151)
HSL	hsl(231, 70%, 35%)
HSV	hsv(231, 82%, 59%)
CMYK	cmyk(82.1%, 70.2%, 0%, 40.8%)
CIE-LAB	lab(24.78, 33.57, -59.47)
CIE-LCH	lch(24.78, 68.29, 299.45°)
OKLab	oklab(36.5% -0.0057 -0.1723)
OKLCH	oklch(36.5% 0.172 268.1)
XYZ	xyz(6.9744, 4.3433, 29.7429)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D97 #97851B

analogous

#1B6B97 #1B2D97 #471B97

triadic

#1B2D97 #971B2D #2D971B

tetradic

#1B2D97 #971B6B #97851B #1B9747

square

#1B2D97 #971B6B #97851B #1B9747

split-complementary

#1B2D97 #97471B #6B971B

monochromatic

#080E2F #121E63 #1B2D97 #243CCB #4D62DF

Accessibility & contrast

On white

11.24

#1B2D97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1B2D97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D97

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D97	#FFFFFF	#000000	##FFFFFF
##1B2D97	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419A

Deuteranopia (green-blind)

#003595

Tritanopia (blue-blind)

#004A5E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b2d97;
/* rgb */ color: rgb(27, 45, 151);
/* oklch */ color: oklch(36.5% 0.172 268.1);

Tailwind

colors: {
  custom: {
    50: '#6f66b7',
    500: '#1b2d97',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d97;
$custom-light: #6f66b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d97",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 151
  },
  "hsl": {
    "h": 231.29,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.36502,
    "c": 0.17237,
    "h": 268.1
  },
  "luminance": 0.04344
}

Semantic roles & 50–950 ramp

primary

#1B2D97

secondary

#C1B04C

accent

#D33BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #1B2D97

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

Preview Lab → · Contrast checker → · Palette generator →