#1B4261#1B4261

#1B4261 is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 36.7% C 0.069 H 245.4°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B4261
RGB	rgb(27, 66, 97)
HSL	hsl(207, 56%, 24%)
HSV	hsv(207, 72%, 38%)
CMYK	cmyk(72.2%, 32%, 0%, 62%)
CIE-LAB	lab(26.71, -2.46, -22.33)
CIE-LCH	lch(26.71, 22.46, 263.71°)
OKLab	oklab(36.68% -0.0289 -0.0631)
OKLCH	oklch(36.68% 0.069 245.4)
XYZ	xyz(4.5571, 4.9920, 12.0303)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4261 #613A1B

analogous

#1B615D #1B4261 #1B1F61

triadic

#1B4261 #611B42 #42611B

tetradic

#1B4261 #5D1B61 #613A1B #1F611B

square

#1B4261 #5D1B61 #613A1B #1F611B

split-complementary

#1B4261 #611B1F #615D1B

monochromatic

#071018 #0E2131 #1B4261 #286391 #3683C1

Accessibility & contrast

On white

10.51

#1B4261 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1B4261 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4261

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4261	#FFFFFF	#000000	##FFFFFF
##1B4261	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344362

Deuteranopia (green-blind)

#2B3C60

Tritanopia (blue-blind)

#00494D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b4261;
/* rgb */ color: rgb(27, 66, 97);
/* oklch */ color: oklch(36.7% 0.069 245.4);

Tailwind

colors: {
  custom: {
    50: '#61768e',
    500: '#1b4261',
    950: '#000000',
  },
}

SCSS

$custom: #1b4261;
$custom-light: #61768e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4261",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 97
  },
  "hsl": {
    "h": 206.571,
    "s": 56.452,
    "l": 24.314
  },
  "oklch": {
    "l": 0.36675,
    "c": 0.06941,
    "h": 245.4
  },
  "luminance": 0.04993
}

Semantic roles & 50–950 ramp

primary

#1B4261

secondary

#976741

accent

#8B48E0

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#05080C

muted

#7A7B7D

Preview Lab

Preview with #1B4261

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

Preview Lab → · Contrast checker → · Palette generator →