#1B2F7E#1B2F7E

#1B2F7E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.136 H 267.6°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F7E
RGB	rgb(27, 47, 126)
HSL	hsl(228, 65%, 30%)
HSV	hsv(228, 79%, 49%)
CMYK	cmyk(78.6%, 62.7%, 0%, 50.6%)
CIE-LAB	lab(22.90, 22.53, -46.97)
CIE-LCH	lch(22.90, 52.09, 295.63°)
OKLab	oklab(34.4% -0.0057 -0.1357)
OKLCH	oklch(34.4% 0.136 267.6)
XYZ	xyz(5.2331, 3.7718, 20.1869)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F7E #7E6A1B

analogous

#1B607E #1B2F7E #391B7E

triadic

#1B2F7E #7E1B2F #2F7E1B

tetradic

#1B2F7E #7E1B60 #7E6A1B #1B7E39

square

#1B2F7E #7E1B60 #7E6A1B #1B7E39

split-complementary

#1B2F7E #7E391B #607E1B

monochromatic

#050919 #101C4C #1B2F7E #2642B0 #3E5CD6

Accessibility & contrast

On white

11.97

#1B2F7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2F7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F7E

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F7E	#FFFFFF	#000000	##FFFFFF
##1B2F7E	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B81

Deuteranopia (green-blind)

#00327C

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2f7e;
/* rgb */ color: rgb(27, 47, 126);
/* oklch */ color: oklch(34.4% 0.136 267.6);

Tailwind

colors: {
  custom: {
    50: '#6867a4',
    500: '#1b2f7e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f7e;
$custom-light: #6867a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f7e",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 126
  },
  "hsl": {
    "h": 227.879,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.34398,
    "c": 0.13583,
    "h": 267.6
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#1B2F7E

secondary

#B29B43

accent

#C640E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2F7E

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

Preview Lab → · Contrast checker → · Palette generator →