#1B90AD#1B90AD

#1B90AD is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.6% C 0.104 H 219.9°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B90AD
RGB	rgb(27, 144, 173)
HSL	hsl(192, 73%, 39%)
HSV	hsv(192, 84%, 68%)
CMYK	cmyk(84.4%, 16.8%, 0%, 32.2%)
CIE-LAB	lab(55.27, -20.26, -23.92)
CIE-LCH	lch(55.27, 31.35, 229.73°)
OKLab	oklab(60.62% -0.08 -0.067)
OKLCH	oklch(60.62% 0.104 219.9)
XYZ	xyz(17.9649, 23.1944, 43.0572)
Luminance	0.2320 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B90AD #AD381B

analogous

#1BAD81 #1B90AD #1B47AD

triadic

#1B90AD #AD1B90 #90AD1B

tetradic

#1B90AD #811BAD #AD381B #47AD1B

square

#1B90AD #811BAD #AD381B #47AD1B

split-complementary

#1B90AD #AD1B47 #AD811B

monochromatic

#0A3843 #136478 #1B90AD #28B9DD #5DCAE6

Accessibility & contrast

On white

3.72

#1B90AD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#1B90AD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B90AD

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B90AD	#FFFFFF	#000000	##000000
##1B90AD	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8CAF

Deuteranopia (green-blind)

#6C7FAD

Tritanopia (blue-blind)

#009999

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #1b90ad;
/* rgb */ color: rgb(27, 144, 173);
/* oklch */ color: oklch(60.6% 0.104 219.9);

Tailwind

colors: {
  custom: {
    50: '#74b0c5',
    500: '#1b90ad',
    950: '#000000',
  },
}

SCSS

$custom: #1b90ad;
$custom-light: #74b0c5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b90ad",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 173
  },
  "hsl": {
    "h": 191.918,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.60616,
    "c": 0.10438,
    "h": 219.9
  },
  "luminance": 0.23197
}

Semantic roles & 50–950 ramp

primary

#1B90AD

secondary

#CA705A

accent

#5D38F0

background

#F7FAFC

surface

#EEF5F8

border

#C9CFD1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1B90AD

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

Preview Lab → · Contrast checker → · Palette generator →