#1B2F7D#1B2F7D

#1B2F7D is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.3% C 0.134 H 267.6°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F7D
RGB	rgb(27, 47, 125)
HSL	hsl(228, 64%, 30%)
HSV	hsv(228, 78%, 49%)
CMYK	cmyk(78.4%, 62.4%, 0%, 51%)
CIE-LAB	lab(22.81, 22.13, -46.48)
CIE-LCH	lch(22.81, 51.48, 295.46°)
OKLab	oklab(34.31% -0.0057 -0.1343)
OKLCH	oklch(34.31% 0.134 267.6)
XYZ	xyz(5.1689, 3.7461, 19.8487)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F7D #7D691B

analogous

#1B607D #1B2F7D #381B7D

triadic

#1B2F7D #7D1B2F #2F7D1B

tetradic

#1B2F7D #7D1B60 #7D691B #1B7D38

square

#1B2F7D #7D1B60 #7D691B #1B7D38

split-complementary

#1B2F7D #7D381B #607D1B

monochromatic

#050919 #101C4B #1B2F7D #2642AF #3D5CD5

Accessibility & contrast

On white

12.00

#1B2F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F7D

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F7D	#FFFFFF	#000000	##FFFFFF
##1B2F7D	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B80

Deuteranopia (green-blind)

#00327B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2f7d;
/* rgb */ color: rgb(27, 47, 125);
/* oklch */ color: oklch(34.3% 0.134 267.6);

Tailwind

colors: {
  custom: {
    50: '#6867a3',
    500: '#1b2f7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f7d;
$custom-light: #6867a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f7d",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 125
  },
  "hsl": {
    "h": 227.755,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.34305,
    "c": 0.1344,
    "h": 267.6
  },
  "luminance": 0.03747
}

Semantic roles & 50–950 ramp

primary

#1B2F7D

secondary

#B19A43

accent

#C540E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2F7D

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

Preview Lab → · Contrast checker → · Palette generator →