#1B2F89#1B2F89

#1B2F89 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.151 H 267.8°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F89
RGB	rgb(27, 47, 137)
HSL	hsl(229, 67%, 32%)
HSV	hsv(229, 80%, 54%)
CMYK	cmyk(80.3%, 65.7%, 0%, 46.3%)
CIE-LAB	lab(23.91, 26.88, -52.23)
CIE-LCH	lch(23.91, 58.74, 297.23°)
OKLab	oklab(35.45% -0.0059 -0.1511)
OKLCH	oklch(35.45% 0.151 267.8)
XYZ	xyz(5.9823, 4.0715, 24.1327)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F89 #89751B

analogous

#1B6689 #1B2F89 #3E1B89

triadic

#1B2F89 #891B2F #2F891B

tetradic

#1B2F89 #891B66 #89751B #1B893E

square

#1B2F89 #891B66 #89751B #1B893E

split-complementary

#1B2F89 #893E1B #66891B

monochromatic

#070C23 #111D56 #1B2F89 #2541BC #445FDA

Accessibility & contrast

On white

11.57

#1B2F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B2F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F89

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F89	#FFFFFF	#000000	##FFFFFF
##1B2F89	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8C

Deuteranopia (green-blind)

#003487

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b2f89;
/* rgb */ color: rgb(27, 47, 137);
/* oklch */ color: oklch(35.5% 0.151 267.8);

Tailwind

colors: {
  custom: {
    50: '#6b67ac',
    500: '#1b2f89',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f89;
$custom-light: #6b67ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f89",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 137
  },
  "hsl": {
    "h": 229.091,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.35451,
    "c": 0.15124,
    "h": 267.8
  },
  "luminance": 0.04072
}

Semantic roles & 50–950 ramp

primary

#1B2F89

secondary

#BCA644

accent

#CB3EEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1B2F89

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

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