#1B5D7C#1B5D7C

#1B5D7C is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.2% C 0.082 H 233.5°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D7C
RGB	rgb(27, 93, 124)
HSL	hsl(199, 64%, 30%)
HSV	hsv(199, 78%, 49%)
CMYK	cmyk(78.2%, 25%, 0%, 51.4%)
CIE-LAB	lab(36.96, -9.12, -23.28)
CIE-LCH	lch(36.96, 25.01, 248.60°)
OKLab	oklab(45.25% -0.0486 -0.0656)
OKLCH	oklch(45.25% 0.082 233.5)
XYZ	xyz(8.0030, 9.5160, 20.4799)
Luminance	0.0952 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D7C #7C3A1B

analogous

#1B7C6A #1B5D7C #1B2D7C

triadic

#1B5D7C #7C1B5D #5D7C1B

tetradic

#1B5D7C #6A1B7C #7C3A1B #2D7C1B

square

#1B5D7C #6A1B7C #7C3A1B #2D7C1B

split-complementary

#1B5D7C #7C1B2D #7C6A1B

monochromatic

#051319 #10374A #1B5D7C #2683AE #3DA4D5

Accessibility & contrast

On white

7.23

#1B5D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#1B5D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D7C

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D7C	#FFFFFF	#000000	##FFFFFF
##1B5D7C	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E5C7D

Deuteranopia (green-blind)

#41537C

Tritanopia (blue-blind)

#006567

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5d7c;
/* rgb */ color: rgb(27, 93, 124);
/* oklch */ color: oklch(45.2% 0.082 233.5);

Tailwind

colors: {
  custom: {
    50: '#678aa2',
    500: '#1b5d7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d7c;
$custom-light: #678aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d7c",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 124
  },
  "hsl": {
    "h": 199.175,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.45248,
    "c": 0.08161,
    "h": 233.5
  },
  "luminance": 0.09517
}

Semantic roles & 50–950 ramp

primary

#1B5D7C

secondary

#B06643

accent

#7641E7

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #1B5D7C

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

Preview Lab → · Contrast checker → · Palette generator →