#1B455C#1B455C

#1B455C is a dark, moderate cyan. Relative luminance 0.053; OKLCH L 37.2% C 0.061 H 235.7°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B455C
RGB	rgb(27, 69, 92)
HSL	hsl(201, 55%, 23%)
HSV	hsv(201, 71%, 36%)
CMYK	cmyk(70.7%, 25%, 0%, 63.9%)
CIE-LAB	lab(27.47, -6.33, -17.92)
CIE-LCH	lch(27.47, 19.01, 250.55°)
OKLab	oklab(37.19% -0.0343 -0.0503)
OKLCH	oklch(37.19% 0.061 235.7)
XYZ	xyz(4.5111, 5.2615, 10.9010)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B455C #5C321B

analogous

#1B5C52 #1B455C #1B245C

triadic

#1B455C #5C1B45 #455C1B

tetradic

#1B455C #521B5C #5C321B #245C1B

square

#1B455C #521B5C #5C321B #245C1B

split-complementary

#1B455C #5C1B24 #5C521B

monochromatic

#071218 #0D222D #1B455C #29688B #378CBB

Accessibility & contrast

On white

10.23

#1B455C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1B455C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B455C

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B455C	#FFFFFF	#000000	##FFFFFF
##1B455C	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A455D

Deuteranopia (green-blind)

#313E5C

Tritanopia (blue-blind)

#004B4D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b455c;
/* rgb */ color: rgb(27, 69, 92);
/* oklch */ color: oklch(37.2% 0.061 235.7);

Tailwind

colors: {
  custom: {
    50: '#60788a',
    500: '#1b455c',
    950: '#000000',
  },
}

SCSS

$custom: #1b455c;
$custom-light: #60788a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b455c",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 92
  },
  "hsl": {
    "h": 201.231,
    "s": 54.622,
    "l": 23.333
  },
  "oklch": {
    "l": 0.3719,
    "c": 0.0609,
    "h": 235.7
  },
  "luminance": 0.05262
}

Semantic roles & 50–950 ramp

primary

#1B455C

secondary

#925E41

accent

#7E4ADE

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05090B

muted

#797B7C

Preview Lab

Preview with #1B455C

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

Preview Lab → · Contrast checker → · Palette generator →