#1B74B3#1B74B3

#1B74B3 is a mid, vivid cyan. Relative luminance 0.160; OKLCH L 54.1% C 0.126 H 245.5°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B74B3
RGB	rgb(27, 116, 179)
HSL	hsl(205, 74%, 40%)
HSV	hsv(205, 85%, 70%)
CMYK	cmyk(84.9%, 35.2%, 0%, 29.8%)
CIE-LAB	lab(46.94, -2.13, -40.39)
CIE-LCH	lch(46.94, 40.44, 266.99°)
OKLab	oklab(54.07% -0.0523 -0.115)
OKLCH	oklch(54.07% 0.126 245.5)
XYZ	xyz(14.8309, 15.9766, 44.9412)
Luminance	0.1598 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B74B3 #B35A1B

analogous

#1BB3A6 #1B74B3 #1B28B3

triadic

#1B74B3 #B31B74 #74B31B

tetradic

#1B74B3 #A61BB3 #B35A1B #28B31B

square

#1B74B3 #A61BB3 #B35A1B #28B31B

split-complementary

#1B74B3 #B31B28 #B3A61B

monochromatic

#0B2F49 #13527E #1B74B3 #2C95DF #61B0E7

Accessibility & contrast

On white

5.01

#1B74B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#1B74B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B74B3

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B74B3	#FFFFFF	#000000	##FFFFFF
##1B74B3	1.00	5.01	4.20	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5677B6

Deuteranopia (green-blind)

#4069B2

Tritanopia (blue-blind)

#00838B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #1b74b3;
/* rgb */ color: rgb(27, 116, 179);
/* oklch */ color: oklch(54.1% 0.126 245.5);

Tailwind

colors: {
  custom: {
    50: '#739bca',
    500: '#1b74b3',
    950: '#000000',
  },
}

SCSS

$custom: #1b74b3;
$custom-light: #739bca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b74b3",
  "rgb": {
    "r": 27,
    "g": 116,
    "b": 179
  },
  "hsl": {
    "h": 204.868,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.54068,
    "c": 0.12637,
    "h": 245.5
  },
  "luminance": 0.15978
}

Semantic roles & 50–950 ramp

primary

#1B74B3

secondary

#CC8C5E

accent

#8437F0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1B74B3

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

Preview Lab → · Contrast checker → · Palette generator →