#1B4E61#1B4E61

#1B4E61 is a dark, moderate cyan. Relative luminance 0.065; OKLCH L 39.9% C 0.062 H 226.3°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E61
RGB	rgb(27, 78, 97)
HSL	hsl(196, 56%, 24%)
HSV	hsv(196, 72%, 38%)
CMYK	cmyk(72.2%, 19.6%, 0%, 62%)
CIE-LAB	lab(30.75, -10.07, -16.06)
CIE-LCH	lch(30.75, 18.95, 237.90°)
OKLab	oklab(39.88% -0.0429 -0.0449)
OKLCH	oklch(39.88% 0.062 226.3)
XYZ	xyz(5.3332, 6.5443, 12.2890)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E61 #612E1B

analogous

#1B6151 #1B4E61 #1B2B61

triadic

#1B4E61 #611B4E #4E611B

tetradic

#1B4E61 #511B61 #612E1B #2B611B

square

#1B4E61 #511B61 #612E1B #2B611B

split-complementary

#1B4E61 #611B2B #61511B

monochromatic

#071318 #0E2831 #1B4E61 #287491 #369BC1

Accessibility & contrast

On white

9.09

#1B4E61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4E61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E61

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E61	#FFFFFF	#000000	##FFFFFF
##1B4E61	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444C62

Deuteranopia (green-blind)

#3A4561

Tritanopia (blue-blind)

#005454

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4e61;
/* rgb */ color: rgb(27, 78, 97);
/* oklch */ color: oklch(39.9% 0.062 226.3);

Tailwind

colors: {
  custom: {
    50: '#617f8e',
    500: '#1b4e61',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e61;
$custom-light: #617f8e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e61",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 97
  },
  "hsl": {
    "h": 196.286,
    "s": 56.452,
    "l": 24.314
  },
  "oklch": {
    "l": 0.3988,
    "c": 0.06208,
    "h": 226.3
  },
  "luminance": 0.06545
}

Semantic roles & 50–950 ramp

primary

#1B4E61

secondary

#975841

accent

#7148E0

background

#F6F7F8

surface

#EBEEF0

border

#C6C9CB

text

#050A0C

muted

#7A7C7D

Preview Lab

Preview with #1B4E61

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

Preview Lab → · Contrast checker → · Palette generator →