#1B436B#1B436B

#1B436B is a dark, moderate cyan. Relative luminance 0.053; OKLCH L 37.6% C 0.082 H 251.0°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B436B
RGB	rgb(27, 67, 107)
HSL	hsl(210, 60%, 26%)
HSV	hsv(210, 75%, 42%)
CMYK	cmyk(74.8%, 37.4%, 0%, 58%)
CIE-LAB	lab(27.60, 0.82, -27.35)
CIE-LCH	lch(27.60, 27.36, 271.72°)
OKLab	oklab(37.55% -0.0268 -0.0777)
OKLCH	oklch(37.55% 0.082 251)
XYZ	xyz(5.1120, 5.3083, 14.6623)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B436B #6B431B

analogous

#1B6B6B #1B436B #1B1B6B

triadic

#1B436B #6B1B43 #436B1B

tetradic

#1B436B #6B1B6B #6B431B #1B6B1B

square

#1B436B #6B1B6B #6B431B #1B6B1B

split-complementary

#1B436B #6B1B1B #6B6B1B

monochromatic

#060F18 #0F243A #1B436B #27629C #3580CC

Accessibility & contrast

On white

10.19

#1B436B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1B436B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B436B

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B436B	#FFFFFF	#000000	##FFFFFF
##1B436B	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31456D

Deuteranopia (green-blind)

#253E6A

Tritanopia (blue-blind)

#004C52

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b436b;
/* rgb */ color: rgb(27, 67, 107);
/* oklch */ color: oklch(37.6% 0.082 251.0);

Tailwind

colors: {
  custom: {
    50: '#637695',
    500: '#1b436b',
    950: '#000000',
  },
}

SCSS

$custom: #1b436b;
$custom-light: #637695;
$custom-dark: #000000;

JSON

{
  "hex": "#1b436b",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 107
  },
  "hsl": {
    "h": 210,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.37552,
    "c": 0.08221,
    "h": 251
  },
  "luminance": 0.05309
}

Semantic roles & 50–950 ramp

primary

#1B436B

secondary

#A07142

accent

#9445E3

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B436B

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

Preview Lab → · Contrast checker → · Palette generator →