#1B455D#1B455D

#1B455D is a dark, moderate cyan. Relative luminance 0.053; OKLCH L 37.2% C 0.062 H 236.9°. Best body text is #FFFFFF at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B455D
RGB	rgb(27, 69, 93)
HSL	hsl(202, 55%, 24%)
HSV	hsv(202, 71%, 36%)
CMYK	cmyk(71%, 25.8%, 0%, 63.5%)
CIE-LAB	lab(27.52, -5.95, -18.49)
CIE-LCH	lch(27.52, 19.43, 252.17°)
OKLab	oklab(37.24% -0.0339 -0.052)
OKLCH	oklch(37.24% 0.062 236.9)
XYZ	xyz(4.5551, 5.2791, 11.1327)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B455D #5D331B

analogous

#1B5D54 #1B455D #1B245D

triadic

#1B455D #5D1B45 #455D1B

tetradic

#1B455D #541B5D #5D331B #245D1B

square

#1B455D #541B5D #5D331B #245D1B

split-complementary

#1B455D #5D1B24 #5D541B

monochromatic

#071218 #0D222E #1B455D #29688C #378BBC

Accessibility & contrast

On white

10.21

#1B455D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1B455D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B455D

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B455D	#FFFFFF	#000000	##FFFFFF
##1B455D	1.00	10.21	2.06	10.21
#FFFFFF	10.21	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A455E

Deuteranopia (green-blind)

#313E5D

Tritanopia (blue-blind)

#004B4D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b455d;
/* rgb */ color: rgb(27, 69, 93);
/* oklch */ color: oklch(37.2% 0.062 236.9);

Tailwind

colors: {
  custom: {
    50: '#60788b',
    500: '#1b455d',
    950: '#000000',
  },
}

SCSS

$custom: #1b455d;
$custom-light: #60788b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b455d",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 93
  },
  "hsl": {
    "h": 201.818,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.37244,
    "c": 0.06205,
    "h": 236.9
  },
  "luminance": 0.0528
}

Semantic roles & 50–950 ramp

primary

#1B455D

secondary

#935F41

accent

#8049DE

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05090C

muted

#797B7D

Preview Lab

Preview with #1B455D

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

Preview Lab → · Contrast checker → · Palette generator →