#1B5161#1B5161

#1B5161 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 40.7% C 0.062 H 221.1°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#1B5161
RGB	rgb(27, 81, 97)
HSL	hsl(194, 56%, 24%)
HSV	hsv(194, 72%, 38%)
CMYK	cmyk(72.2%, 16.5%, 0%, 62%)
CIE-LAB	lab(31.76, -11.88, -14.49)
CIE-LCH	lch(31.76, 18.74, 230.67°)
OKLab	oklab(40.69% -0.0464 -0.0404)
OKLCH	oklch(40.69% 0.062 221.1)
XYZ	xyz(5.5512, 6.9803, 12.3617)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5161 #612B1B

analogous

#1B614E #1B5161 #1B2E61

triadic

#1B5161 #611B51 #51611B

tetradic

#1B5161 #4E1B61 #612B1B #2E611B

square

#1B5161 #4E1B61 #612B1B #2E611B

split-complementary

#1B5161 #611B2E #614E1B

monochromatic

#071418 #0E2931 #1B5161 #287991 #36A1C1

Accessibility & contrast

On white

8.76

#1B5161 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1B5161 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5161

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5161	#FFFFFF	#000000	##FFFFFF
##1B5161	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474F62

Deuteranopia (green-blind)

#3E4861

Tritanopia (blue-blind)

#005656

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b5161;
/* rgb */ color: rgb(27, 81, 97);
/* oklch */ color: oklch(40.7% 0.062 221.1);

Tailwind

colors: {
  custom: {
    50: '#61828e',
    500: '#1b5161',
    950: '#000000',
  },
}

SCSS

$custom: #1b5161;
$custom-light: #61828e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5161",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 97
  },
  "hsl": {
    "h": 193.714,
    "s": 56.452,
    "l": 24.314
  },
  "oklch": {
    "l": 0.40694,
    "c": 0.06153,
    "h": 221.1
  },
  "luminance": 0.06981
}

Semantic roles & 50–950 ramp

primary

#1B5161

secondary

#975541

accent

#6B48E0

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B5161

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

Preview Lab → · Contrast checker → · Palette generator →