#1B90B4#1B90B4

#1B90B4 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 60.9% C 0.109 H 225.0°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B90B4
RGB	rgb(27, 144, 180)
HSL	hsl(194, 74%, 41%)
HSV	hsv(194, 85%, 71%)
CMYK	cmyk(85%, 20%, 0%, 29.4%)
CIE-LAB	lab(55.56, -17.83, -27.48)
CIE-LCH	lch(55.56, 32.75, 237.02°)
OKLab	oklab(60.94% -0.0773 -0.0772)
OKLCH	oklch(60.94% 0.109 225)
XYZ	xyz(18.6600, 23.4724, 46.7183)
Luminance	0.2347 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B90B4 #B43F1B

analogous

#1BB48C #1B90B4 #1B43B4

triadic

#1B90B4 #B41B90 #90B41B

tetradic

#1B90B4 #8C1BB4 #B43F1B #43B41B

square

#1B90B4 #8C1BB4 #B43F1B #43B41B

split-complementary

#1B90B4 #B41B43 #B48C1B

monochromatic

#0B3B4A #13657F #1B90B4 #2DB5DF #62C8E7

Accessibility & contrast

On white

3.69

#1B90B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#1B90B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B90B4

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B90B4	#FFFFFF	#000000	##000000
##1B90B4	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8DB6

Deuteranopia (green-blind)

#697FB4

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #1b90b4;
/* rgb */ color: rgb(27, 144, 180);
/* oklch */ color: oklch(60.9% 0.109 225.0);

Tailwind

colors: {
  custom: {
    50: '#75b0ca',
    500: '#1b90b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b90b4;
$custom-light: #75b0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b90b4",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 180
  },
  "hsl": {
    "h": 194.118,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.60938,
    "c": 0.10926,
    "h": 225
  },
  "luminance": 0.23475
}

Semantic roles & 50–950 ramp

primary

#1B90B4

secondary

#CC785F

accent

#6337F1

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1B90B4

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

Preview Lab → · Contrast checker → · Palette generator →