#1B4B60#1B4B60

#1B4B60 is a dark, moderate cyan. Relative luminance 0.061; OKLCH L 39.0% C 0.062 H 230.2°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B60
RGB	rgb(27, 75, 96)
HSL	hsl(198, 56%, 24%)
HSV	hsv(198, 72%, 38%)
CMYK	cmyk(71.9%, 21.9%, 0%, 62.4%)
CIE-LAB	lab(29.69, -8.60, -17.06)
CIE-LCH	lch(29.69, 19.10, 243.24°)
OKLab	oklab(39.02% -0.0398 -0.0478)
OKLCH	oklch(39.02% 0.062 230.2)
XYZ	xyz(5.0786, 6.1091, 11.9756)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B60 #60301B

analogous

#1B6053 #1B4B60 #1B2960

triadic

#1B4B60 #601B4B #4B601B

tetradic

#1B4B60 #531B60 #60301B #29601B

square

#1B4B60 #531B60 #60301B #29601B

split-complementary

#1B4B60 #601B29 #60531B

monochromatic

#071318 #0E2630 #1B4B60 #287090 #3696C0

Accessibility & contrast

On white

9.45

#1B4B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1B4B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B60

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B60	#FFFFFF	#000000	##FFFFFF
##1B4B60	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#404A61

Deuteranopia (green-blind)

#374360

Tritanopia (blue-blind)

#005152

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4b60;
/* rgb */ color: rgb(27, 75, 96);
/* oklch */ color: oklch(39.0% 0.062 230.2);

Tailwind

colors: {
  custom: {
    50: '#617d8d',
    500: '#1b4b60',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b60;
$custom-light: #617d8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b60",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 96
  },
  "hsl": {
    "h": 198.261,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.39019,
    "c": 0.06218,
    "h": 230.2
  },
  "luminance": 0.0611
}

Semantic roles & 50–950 ramp

primary

#1B4B60

secondary

#965B41

accent

#7648DF

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#05090C

muted

#7A7B7D

Preview Lab

Preview with #1B4B60

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

Preview Lab → · Contrast checker → · Palette generator →