#1B2C7F#1B2C7F

#1B2C7F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.9% C 0.141 H 268.5°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C7F
RGB	rgb(27, 44, 127)
HSL	hsl(230, 65%, 30%)
HSV	hsv(230, 79%, 50%)
CMYK	cmyk(78.7%, 65.4%, 0%, 50.2%)
CIE-LAB	lab(22.18, 25.02, -48.78)
CIE-LCH	lch(22.18, 54.82, 297.15°)
OKLab	oklab(33.89% -0.0037 -0.141)
OKLCH	oklch(33.89% 0.141 268.5)
XYZ	xyz(5.1821, 3.5661, 20.4898)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C7F #7F6E1B

analogous

#1B5E7F #1B2C7F #3C1B7F

triadic

#1B2C7F #7F1B2C #2C7F1B

tetradic

#1B2C7F #7F1B5E #7F6E1B #1B7F3C

square

#1B2C7F #7F1B5E #7F6E1B #1B7F3C

split-complementary

#1B2C7F #7F3C1B #5E7F1B

monochromatic

#06091A #101B4D #1B2C7F #263DB1 #3E58D6

Accessibility & contrast

On white

12.26

#1B2C7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2C7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C7F

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C7F	#FFFFFF	#000000	##FFFFFF
##1B2C7F	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A82

Deuteranopia (green-blind)

#00307D

Tritanopia (blue-blind)

#004251

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2c7f;
/* rgb */ color: rgb(27, 44, 127);
/* oklch */ color: oklch(33.9% 0.141 268.5);

Tailwind

colors: {
  custom: {
    50: '#6965a5',
    500: '#1b2c7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c7f;
$custom-light: #6965a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c7f",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 127
  },
  "hsl": {
    "h": 229.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.33893,
    "c": 0.1411,
    "h": 268.5
  },
  "luminance": 0.03567
}

Semantic roles & 50–950 ramp

primary

#1B2C7F

secondary

#B3A043

accent

#CB40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2C7F

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

Preview Lab → · Contrast checker → · Palette generator →