#1B2F7F#1B2F7F

#1B2F7F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.137 H 267.6°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F7F
RGB	rgb(27, 47, 127)
HSL	hsl(228, 65%, 30%)
HSV	hsv(228, 79%, 50%)
CMYK	cmyk(78.7%, 63%, 0%, 50.2%)
CIE-LAB	lab(22.99, 22.93, -47.46)
CIE-LCH	lch(22.99, 52.70, 295.79°)
OKLab	oklab(34.49% -0.0057 -0.1371)
OKLCH	oklch(34.49% 0.137 267.6)
XYZ	xyz(5.2979, 3.7978, 20.5284)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F7F #7F6B1B

analogous

#1B617F #1B2F7F #391B7F

triadic

#1B2F7F #7F1B2F #2F7F1B

tetradic

#1B2F7F #7F1B61 #7F6B1B #1B7F39

square

#1B2F7F #7F1B61 #7F6B1B #1B7F39

split-complementary

#1B2F7F #7F391B #617F1B

monochromatic

#060A1A #101C4D #1B2F7F #2642B1 #3E5DD6

Accessibility & contrast

On white

11.93

#1B2F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1B2F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F7F

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F7F	#FFFFFF	#000000	##FFFFFF
##1B2F7F	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00327D

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2f7f;
/* rgb */ color: rgb(27, 47, 127);
/* oklch */ color: oklch(34.5% 0.137 267.6);

Tailwind

colors: {
  custom: {
    50: '#6867a5',
    500: '#1b2f7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f7f;
$custom-light: #6867a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f7f",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 127
  },
  "hsl": {
    "h": 228,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34492,
    "c": 0.13726,
    "h": 267.6
  },
  "luminance": 0.03798
}

Semantic roles & 50–950 ramp

primary

#1B2F7F

secondary

#B39C43

accent

#C640E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1B2F7F

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

Preview Lab → · Contrast checker → · Palette generator →