#1B3B60#1B3B60

#1B3B60 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.075 H 253.6°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B3B60
RGB	rgb(27, 59, 96)
HSL	hsl(212, 56%, 24%)
HSV	hsv(212, 72%, 38%)
CMYK	cmyk(71.9%, 38.5%, 0%, 62.4%)
CIE-LAB	lab(24.34, 1.86, -25.42)
CIE-LCH	lch(24.34, 25.49, 274.19°)
OKLab	oklab(34.79% -0.0212 -0.0722)
OKLCH	oklch(34.79% 0.075 253.6)
XYZ	xyz(4.1265, 4.2050, 11.6582)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3B60 #60401B

analogous

#1B5E60 #1B3B60 #1E1B60

triadic

#1B3B60 #601B3B #3B601B

tetradic

#1B3B60 #601B5E #60401B #1B601E

square

#1B3B60 #601B5E #60401B #1B601E

split-complementary

#1B3B60 #601E1B #5E601B

monochromatic

#070F18 #0E1E30 #1B3B60 #285890 #3676C0

Accessibility & contrast

On white

11.41

#1B3B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B3B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3B60

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3B60	#FFFFFF	#000000	##FFFFFF
##1B3B60	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3D62

Deuteranopia (green-blind)

#21375F

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b3b60;
/* rgb */ color: rgb(27, 59, 96);
/* oklch */ color: oklch(34.8% 0.075 253.6);

Tailwind

colors: {
  custom: {
    50: '#60708d',
    500: '#1b3b60',
    950: '#000000',
  },
}

SCSS

$custom: #1b3b60;
$custom-light: #60708d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3b60",
  "rgb": {
    "r": 27,
    "g": 59,
    "b": 96
  },
  "hsl": {
    "h": 212.174,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.34793,
    "c": 0.07525,
    "h": 253.6
  },
  "luminance": 0.04205
}

Semantic roles & 50–950 ramp

primary

#1B3B60

secondary

#966E41

accent

#9948DF

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #1B3B60

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

Preview Lab → · Contrast checker → · Palette generator →