#1B4963#1B4963

#1B4963 is a dark, moderate cyan. Relative luminance 0.059; OKLCH L 38.6% C 0.066 H 236.9°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B4963
RGB	rgb(27, 73, 99)
HSL	hsl(202, 57%, 25%)
HSV	hsv(202, 73%, 39%)
CMYK	cmyk(72.7%, 26.3%, 0%, 61.2%)
CIE-LAB	lab(29.15, -6.22, -19.80)
CIE-LCH	lch(29.15, 20.75, 252.56°)
OKLab	oklab(38.64% -0.0363 -0.0557)
OKLCH	oklch(38.64% 0.066 236.9)
XYZ	xyz(5.0858, 5.8984, 12.6724)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4963 #63351B

analogous

#1B6359 #1B4963 #1B2563

triadic

#1B4963 #631B49 #49631B

tetradic

#1B4963 #591B63 #63351B #25631B

square

#1B4963 #591B63 #63351B #25631B

split-complementary

#1B4963 #631B25 #63591B

monochromatic

#071218 #0E2633 #1B4963 #286C93 #3590C3

Accessibility & contrast

On white

9.63

#1B4963 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#1B4963 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4963

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4963	#FFFFFF	#000000	##FFFFFF
##1B4963	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4964

Deuteranopia (green-blind)

#334263

Tritanopia (blue-blind)

#005052

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b4963;
/* rgb */ color: rgb(27, 73, 99);
/* oklch */ color: oklch(38.6% 0.066 236.9);

Tailwind

colors: {
  custom: {
    50: '#617b8f',
    500: '#1b4963',
    950: '#000000',
  },
}

SCSS

$custom: #1b4963;
$custom-light: #617b8f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4963",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 99
  },
  "hsl": {
    "h": 201.667,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.38643,
    "c": 0.06645,
    "h": 236.9
  },
  "luminance": 0.05899
}

Semantic roles & 50–950 ramp

primary

#1B4963

secondary

#986141

accent

#7F47E0

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4963

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

Preview Lab → · Contrast checker → · Palette generator →