#1D90A8#1D90A8

#1D90A8 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.4% C 0.101 H 216.2°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#1D90A8
RGB	rgb(29, 144, 168)
HSL	hsl(190, 71%, 39%)
HSV	hsv(190, 83%, 66%)
CMYK	cmyk(82.7%, 14.3%, 0%, 34.1%)
CIE-LAB	lab(55.11, -21.80, -21.31)
CIE-LCH	lch(55.11, 30.48, 224.34°)
OKLab	oklab(60.43% -0.0815 -0.0596)
OKLCH	oklch(60.43% 0.101 216.2)
XYZ	xyz(17.5448, 23.0327, 40.5592)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D90A8 #A8351D

analogous

#1DA87A #1D90A8 #1D4AA8

triadic

#1D90A8 #A81D90 #90A81D

tetradic

#1D90A8 #7A1DA8 #A8351D #4AA81D

square

#1D90A8 #7A1DA8 #A8351D #4AA81D

split-complementary

#1D90A8 #A81D4A #A87A1D

monochromatic

#0B3740 #146374 #1D90A8 #28BBDA #5CCCE3

Accessibility & contrast

On white

3.75

#1D90A8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#1D90A8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1D90A8

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D90A8	#FFFFFF	#000000	##000000
##1D90A8	1.00	3.75	5.61	5.61
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	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: #1d90a8;
/* rgb */ color: rgb(29, 144, 168);
/* oklch */ color: oklch(60.4% 0.101 216.2);

Tailwind

colors: {
  custom: {
    50: '#73b0c2',
    500: '#1d90a8',
    950: '#000000',
  },
}

SCSS

$custom: #1d90a8;
$custom-light: #73b0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d90a8",
  "rgb": {
    "r": 29,
    "g": 144,
    "b": 168
  },
  "hsl": {
    "h": 190.36,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.60426,
    "c": 0.10091,
    "h": 216.2
  },
  "luminance": 0.23035
}

Semantic roles & 50–950 ramp

primary

#1D90A8

secondary

#C76D5A

accent

#593AED

background

#F7FAFB

surface

#EEF5F7

border

#C9CFD0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #1D90A8

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

Preview Lab → · Contrast checker → · Palette generator →