#1B4064#1B4064

#1B4064 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.3% C 0.076 H 250.1°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B4064
RGB	rgb(27, 64, 100)
HSL	hsl(210, 57%, 25%)
HSV	hsv(210, 73%, 39%)
CMYK	cmyk(73%, 36%, 0%, 60.8%)
CIE-LAB	lab(26.21, 0.05, -25.05)
CIE-LCH	lch(26.21, 25.05, 270.12°)
OKLab	oklab(36.34% -0.0257 -0.071)
OKLCH	oklch(36.34% 0.076 250.1)
XYZ	xyz(4.5848, 4.8194, 12.7427)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4064 #643F1B

analogous

#1B6463 #1B4064 #1B1C64

triadic

#1B4064 #641B40 #40641B

tetradic

#1B4064 #631B64 #643F1B #1C641B

square

#1B4064 #631B64 #643F1B #1C641B

split-complementary

#1B4064 #641B1C #64631B

monochromatic

#070F18 #0E2134 #1B4064 #285F94 #357EC4

Accessibility & contrast

On white

10.69

#1B4064 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1B4064 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4064

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4064	#FFFFFF	#000000	##FFFFFF
##1B4064	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304266

Deuteranopia (green-blind)

#263B63

Tritanopia (blue-blind)

#00484D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b4064;
/* rgb */ color: rgb(27, 64, 100);
/* oklch */ color: oklch(36.3% 0.076 250.1);

Tailwind

colors: {
  custom: {
    50: '#617490',
    500: '#1b4064',
    950: '#000000',
  },
}

SCSS

$custom: #1b4064;
$custom-light: #617490;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4064",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 100
  },
  "hsl": {
    "h": 209.589,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36338,
    "c": 0.07552,
    "h": 250.1
  },
  "luminance": 0.0482
}

Semantic roles & 50–950 ramp

primary

#1B4064

secondary

#996D41

accent

#9347E1

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05080C

muted

#7A7B7D

Preview Lab

Preview with #1B4064

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

Preview Lab → · Contrast checker → · Palette generator →