#1B436D#1B436D

#1B436D is a dark, moderate cyan. Relative luminance 0.054; OKLCH L 37.7% C 0.085 H 252.0°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B436D
RGB	rgb(27, 67, 109)
HSL	hsl(211, 60%, 27%)
HSV	hsv(211, 75%, 43%)
CMYK	cmyk(75.2%, 38.5%, 0%, 57.3%)
CIE-LAB	lab(27.71, 1.62, -28.44)
CIE-LCH	lch(27.71, 28.48, 273.27°)
OKLab	oklab(37.68% -0.0262 -0.0809)
OKLCH	oklch(37.68% 0.085 252)
XYZ	xyz(5.2184, 5.3509, 15.2228)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B436D #6D451B

analogous

#1B6C6D #1B436D #1C1B6D

triadic

#1B436D #6D1B43 #436D1B

tetradic

#1B436D #6D1B6C #6D451B #1B6D1C

square

#1B436D #6D1B6C #6D451B #1B6D1C

split-complementary

#1B436D #6D1C1B #6C6D1B

monochromatic

#060F19 #0F253C #1B436D #27619E #357FCD

Accessibility & contrast

On white

10.14

#1B436D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1B436D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B436D

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B436D	#FFFFFF	#000000	##FFFFFF
##1B436D	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30466F

Deuteranopia (green-blind)

#243E6C

Tritanopia (blue-blind)

#004D52

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b436d;
/* rgb */ color: rgb(27, 67, 109);
/* oklch */ color: oklch(37.7% 0.085 252.0);

Tailwind

colors: {
  custom: {
    50: '#637697',
    500: '#1b436d',
    950: '#000000',
  },
}

SCSS

$custom: #1b436d;
$custom-light: #637697;
$custom-dark: #000000;

JSON

{
  "hex": "#1b436d",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 109
  },
  "hsl": {
    "h": 210.732,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.37681,
    "c": 0.08504,
    "h": 252
  },
  "luminance": 0.05351
}

Semantic roles & 50–950 ramp

primary

#1B436D

secondary

#A27342

accent

#9644E3

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B436D

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

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