#1B5DAA#1B5DAA

#1B5DAA is a mid, vivid cyan. Relative luminance 0.110; OKLCH L 48.1% C 0.139 H 255.3°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B5DAA
RGB	rgb(27, 93, 170)
HSL	hsl(212, 73%, 39%)
HSV	hsv(212, 84%, 67%)
CMYK	cmyk(84.1%, 45.3%, 0%, 33.3%)
CIE-LAB	lab(39.52, 8.85, -46.95)
CIE-LCH	lch(39.52, 47.78, 280.68°)
OKLab	oklab(48.09% -0.0354 -0.1348)
OKLCH	oklch(48.09% 0.139 255.3)
XYZ	xyz(11.6193, 10.9625, 39.5260)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5DAA #AA681B

analogous

#1BA4AA #1B5DAA #211BAA

triadic

#1B5DAA #AA1B5D #5DAA1B

tetradic

#1B5DAA #AA1BA4 #AA681B #1BAA21

square

#1B5DAA #AA1BA4 #AA681B #1BAA21

split-complementary

#1B5DAA #AA211B #A4AA1B

monochromatic

#0A2340 #134075 #1B5DAA #267ADC #5B9AE5

Accessibility & contrast

On white

6.58

#1B5DAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#1B5DAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5DAA

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5DAA	#FFFFFF	#000000	##FFFFFF
##1B5DAA	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3464AD

Deuteranopia (green-blind)

#1357A8

Tritanopia (blue-blind)

#006F7B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1b5daa;
/* rgb */ color: rgb(27, 93, 170);
/* oklch */ color: oklch(48.1% 0.139 255.3);

Tailwind

colors: {
  custom: {
    50: '#718ac4',
    500: '#1b5daa',
    950: '#000000',
  },
}

SCSS

$custom: #1b5daa;
$custom-light: #718ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5daa",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 170
  },
  "hsl": {
    "h": 212.308,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.48091,
    "c": 0.13933,
    "h": 255.3
  },
  "luminance": 0.10964
}

Semantic roles & 50–950 ramp

primary

#1B5DAA

secondary

#C99558

accent

#9B39EF

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1B5DAA

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

Preview Lab → · Contrast checker → · Palette generator →