#1B2F79#1B2F79

#1B2F79 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.9% C 0.129 H 267.4°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F79
RGB	rgb(27, 47, 121)
HSL	hsl(227, 64%, 29%)
HSV	hsv(227, 78%, 47%)
CMYK	cmyk(77.7%, 61.2%, 0%, 52.5%)
CIE-LAB	lab(22.46, 20.53, -44.51)
CIE-LCH	lch(22.46, 49.02, 294.76°)
OKLab	oklab(33.94% -0.0058 -0.1285)
OKLCH	oklch(33.94% 0.129 267.4)
XYZ	xyz(4.9185, 3.6460, 18.5300)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F79 #79651B

analogous

#1B5E79 #1B2F79 #361B79

triadic

#1B2F79 #791B2F #2F791B

tetradic

#1B2F79 #791B5E #79651B #1B7936

square

#1B2F79 #791B5E #79651B #1B7936

split-complementary

#1B2F79 #79361B #5E791B

monochromatic

#060A19 #101C47 #1B2F79 #2642AB #3B5BD3

Accessibility & contrast

On white

12.14

#1B2F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F79

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F79	#FFFFFF	#000000	##FFFFFF
##1B2F79	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7B

Deuteranopia (green-blind)

#003178

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2f79;
/* rgb */ color: rgb(27, 47, 121);
/* oklch */ color: oklch(33.9% 0.129 267.4);

Tailwind

colors: {
  custom: {
    50: '#6767a0',
    500: '#1b2f79',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f79;
$custom-light: #6767a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f79",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 121
  },
  "hsl": {
    "h": 227.234,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33936,
    "c": 0.12864,
    "h": 267.4
  },
  "luminance": 0.03647
}

Semantic roles & 50–950 ramp

primary

#1B2F79

secondary

#AD9743

accent

#C341E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #1B2F79

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

Preview Lab → · Contrast checker → · Palette generator →