#1B2F75#1B2F75

#1B2F75 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.6% C 0.123 H 267.2°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F75
RGB	rgb(27, 47, 117)
HSL	hsl(227, 63%, 28%)
HSV	hsv(227, 77%, 46%)
CMYK	cmyk(76.9%, 59.8%, 0%, 54.1%)
CIE-LAB	lab(22.12, 18.91, -42.52)
CIE-LCH	lch(22.12, 46.54, 293.98°)
OKLab	oklab(33.57% -0.0059 -0.1226)
OKLCH	oklch(33.57% 0.123 267.2)
XYZ	xyz(4.6783, 3.5499, 17.2648)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F75 #75611B

analogous

#1B5C75 #1B2F75 #341B75

triadic

#1B2F75 #751B2F #2F751B

tetradic

#1B2F75 #751B5C #75611B #1B7534

square

#1B2F75 #751B5C #75611B #1B7534

split-complementary

#1B2F75 #75341B #5C751B

monochromatic

#060A19 #101B43 #1B2F75 #2643A7 #395BD1

Accessibility & contrast

On white

12.28

#1B2F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F75

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F75	#FFFFFF	#000000	##FFFFFF
##1B2F75	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003977

Deuteranopia (green-blind)

#003174

Tritanopia (blue-blind)

#00404D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2f75;
/* rgb */ color: rgb(27, 47, 117);
/* oklch */ color: oklch(33.6% 0.123 267.2);

Tailwind

colors: {
  custom: {
    50: '#66679d',
    500: '#1b2f75',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f75;
$custom-light: #66679d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f75",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 117
  },
  "hsl": {
    "h": 226.667,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.33574,
    "c": 0.12279,
    "h": 267.2
  },
  "luminance": 0.0355
}

Semantic roles & 50–950 ramp

primary

#1B2F75

secondary

#A99342

accent

#C142E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B2F75

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

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