#1B436E#1B436E

#1B436E is a dark, moderate cyan. Relative luminance 0.054; OKLCH L 37.7% C 0.086 H 252.5°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B436E
RGB	rgb(27, 67, 110)
HSL	hsl(211, 61%, 27%)
HSV	hsv(211, 75%, 43%)
CMYK	cmyk(75.5%, 39.1%, 0%, 56.9%)
CIE-LAB	lab(27.77, 2.03, -28.98)
CIE-LCH	lch(27.77, 29.05, 274.00°)
OKLab	oklab(37.75% -0.026 -0.0825)
OKLCH	oklch(37.75% 0.086 252.5)
XYZ	xyz(5.2726, 5.3725, 15.5080)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B436E #6E461B

analogous

#1B6D6E #1B436E #1C1B6E

triadic

#1B436E #6E1B43 #436E1B

tetradic

#1B436E #6E1B6D #6E461B #1B6E1C

square

#1B436E #6E1B6D #6E461B #1B6E1C

split-complementary

#1B436E #6E1C1B #6D6E1B

monochromatic

#060F19 #0F253D #1B436E #27619F #367FCE

Accessibility & contrast

On white

10.12

#1B436E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1B436E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B436E

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B436E	#FFFFFF	#000000	##FFFFFF
##1B436E	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4670

Deuteranopia (green-blind)

#233E6D

Tritanopia (blue-blind)

#004D53

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1b436e;
/* rgb */ color: rgb(27, 67, 110);
/* oklch */ color: oklch(37.7% 0.086 252.5);

Tailwind

colors: {
  custom: {
    50: '#637698',
    500: '#1b436e',
    950: '#000000',
  },
}

SCSS

$custom: #1b436e;
$custom-light: #637698;
$custom-dark: #000000;

JSON

{
  "hex": "#1b436e",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 110
  },
  "hsl": {
    "h": 211.084,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.37746,
    "c": 0.08647,
    "h": 252.5
  },
  "luminance": 0.05373
}

Semantic roles & 50–950 ramp

primary

#1B436E

secondary

#A37442

accent

#9744E4

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B436E

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

Preview Lab → · Contrast checker → · Palette generator →