#1B406E#1B406E

#1B406E is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 37.0% C 0.090 H 255.3°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B406E
RGB	rgb(27, 64, 110)
HSL	hsl(213, 61%, 27%)
HSV	hsv(213, 75%, 43%)
CMYK	cmyk(75.5%, 41.8%, 0%, 56.9%)
CIE-LAB	lab(26.81, 4.07, -30.51)
CIE-LCH	lch(26.81, 30.78, 277.59°)
OKLab	oklab(36.99% -0.0228 -0.087)
OKLCH	oklch(36.99% 0.09 255.3)
XYZ	xyz(5.0988, 5.0250, 15.4500)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B406E #6E491B

analogous

#1B6A6E #1B406E #201B6E

triadic

#1B406E #6E1B40 #406E1B

tetradic

#1B406E #6E1B6A #6E491B #1B6E20

square

#1B406E #6E1B6A #6E491B #1B6E20

split-complementary

#1B406E #6E201B #6A6E1B

monochromatic

#060E19 #0F233D #1B406E #275D9F #3679CE

Accessibility & contrast

On white

10.47

#1B406E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1B406E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B406E

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B406E	#FFFFFF	#000000	##FFFFFF
##1B406E	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4470

Deuteranopia (green-blind)

#1D3C6D

Tritanopia (blue-blind)

#004B51

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b406e;
/* rgb */ color: rgb(27, 64, 110);
/* oklch */ color: oklch(37.0% 0.090 255.3);

Tailwind

colors: {
  custom: {
    50: '#637498',
    500: '#1b406e',
    950: '#000000',
  },
}

SCSS

$custom: #1b406e;
$custom-light: #637498;
$custom-dark: #000000;

JSON

{
  "hex": "#1b406e",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 110
  },
  "hsl": {
    "h": 213.253,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36993,
    "c": 0.08998,
    "h": 255.3
  },
  "luminance": 0.05026
}

Semantic roles & 50–950 ramp

primary

#1B406E

secondary

#A37842

accent

#9D44E4

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #1B406E

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

Preview Lab → · Contrast checker → · Palette generator →