#1B314F#1B314F

#1B314F is a dark, moderate cyan. Relative luminance 0.030; OKLCH L 31.1% C 0.061 H 256.5°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B314F
RGB	rgb(27, 49, 79)
HSL	hsl(215, 49%, 21%)
HSV	hsv(215, 66%, 31%)
CMYK	cmyk(65.8%, 38%, 0%, 69%)
CIE-LAB	lab(20.02, 2.07, -21.02)
CIE-LCH	lch(20.02, 21.12, 275.63°)
OKLab	oklab(31.09% -0.0142 -0.0595)
OKLCH	oklch(31.09% 0.061 256.5)
XYZ	xyz(2.9611, 2.9939, 7.8175)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B314F #4F391B

analogous

#1B4B4F #1B314F #1F1B4F

triadic

#1B314F #4F1B31 #314F1B

tetradic

#1B314F #4F1B4B #4F391B #1B4F1F

square

#1B314F #4F1B4B #4F391B #1B4F1F

split-complementary

#1B314F #4F1F1B #4B4F1B

monochromatic

#080E17 #0B1521 #1B314F #2B4D7D #3A6AAA

Accessibility & contrast

On white

13.13

#1B314F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1B314F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B314F

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B314F	#FFFFFF	#000000	##FFFFFF
##1B314F	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243350

Deuteranopia (green-blind)

#1E2E4E

Tritanopia (blue-blind)

#00383C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b314f;
/* rgb */ color: rgb(27, 49, 79);
/* oklch */ color: oklch(31.1% 0.061 256.5);

Tailwind

colors: {
  custom: {
    50: '#5d6880',
    500: '#1b314f',
    950: '#000000',
  },
}

SCSS

$custom: #1b314f;
$custom-light: #5d6880;
$custom-dark: #000000;

JSON

{
  "hex": "#1b314f",
  "rgb": {
    "r": 27,
    "g": 49,
    "b": 79
  },
  "hsl": {
    "h": 214.615,
    "s": 49.057,
    "l": 20.784
  },
  "oklch": {
    "l": 0.31094,
    "c": 0.06116,
    "h": 256.5
  },
  "luminance": 0.02994
}

Semantic roles & 50–950 ramp

primary

#1B314F

secondary

#856841

accent

#9E4FD9

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #1B314F

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

Preview Lab → · Contrast checker → · Palette generator →