#1B90A8#1B90A8

#1B90A8 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.4% C 0.101 H 216.0°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B90A8
RGB	rgb(27, 144, 168)
HSL	hsl(190, 72%, 38%)
HSV	hsv(190, 84%, 66%)
CMYK	cmyk(83.9%, 14.3%, 0%, 34.1%)
CIE-LAB	lab(55.08, -21.97, -21.35)
CIE-LCH	lch(55.08, 30.64, 224.18°)
OKLab	oklab(60.39% -0.082 -0.0597)
OKLCH	oklch(60.39% 0.101 216)
XYZ	xyz(17.4901, 23.0045, 40.5567)
Luminance	0.2301 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B90A8 #A8331B

analogous

#1BA879 #1B90A8 #1B49A8

triadic

#1B90A8 #A81B90 #90A81B

tetradic

#1B90A8 #791BA8 #A8331B #49A81B

square

#1B90A8 #791BA8 #A8331B #49A81B

split-complementary

#1B90A8 #A81B49 #A8791B

monochromatic

#0A363F #136373 #1B90A8 #24BDDC #59CDE4

Accessibility & contrast

On white

3.75

#1B90A8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#1B90A8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B90A8

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B90A8	#FFFFFF	#000000	##000000
##1B90A8	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808BA9

Deuteranopia (green-blind)

#6E7EA8

Tritanopia (blue-blind)

#009998

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #1b90a8;
/* rgb */ color: rgb(27, 144, 168);
/* oklch */ color: oklch(60.4% 0.101 216.0);

Tailwind

colors: {
  custom: {
    50: '#73b0c2',
    500: '#1b90a8',
    950: '#000000',
  },
}

SCSS

$custom: #1b90a8;
$custom-light: #73b0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b90a8",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 168
  },
  "hsl": {
    "h": 190.213,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.60394,
    "c": 0.10148,
    "h": 216
  },
  "luminance": 0.23007
}

Semantic roles & 50–950 ramp

primary

#1B90A8

secondary

#C86A57

accent

#5839EF

background

#F7FAFB

surface

#EEF5F7

border

#C9CFD0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #1B90A8

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

Preview Lab → · Contrast checker → · Palette generator →