#1D99BB#1D99BB

#1D99BB is a light, moderate cyan. Relative luminance 0.266; OKLCH L 63.5% C 0.111 H 222.3°. Best body text is #000000 at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#1D99BB
RGB	rgb(29, 153, 187)
HSL	hsl(193, 73%, 42%)
HSV	hsv(193, 84%, 73%)
CMYK	cmyk(84.5%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(58.63, -20.06, -26.70)
CIE-LCH	lch(58.63, 33.39, 233.08°)
OKLab	oklab(63.51% -0.0824 -0.0749)
OKLCH	oklch(63.51% 0.111 222.3)
XYZ	xyz(20.8638, 26.6289, 51.0443)
Luminance	0.2663 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D99BB #BB3F1D

analogous

#1DBB8E #1D99BB #1D4ABB

triadic

#1D99BB #BB1D99 #99BB1D

tetradic

#1D99BB #8E1DBB #BB3F1D #4ABB1D

square

#1D99BB #8E1DBB #BB3F1D #4ABB1D

split-complementary

#1D99BB #BB1D4A #BB8E1D

monochromatic

#0D4251 #156E86 #1D99BB #35BBE0 #6ACDE8

Accessibility & contrast

On white

3.32

#1D99BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.33

#1D99BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1D99BB

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D99BB	#FFFFFF	#000000	##000000
##1D99BB	1.00	3.32	6.33	6.33
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.33	21.00	1.00	1.00
##000000	6.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8595BD

Deuteranopia (green-blind)

#7187BB

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #1d99bb;
/* rgb */ color: rgb(29, 153, 187);
/* oklch */ color: oklch(63.5% 0.111 222.3);

Tailwind

colors: {
  custom: {
    50: '#77b7cf',
    500: '#1d99bb',
    950: '#000000',
  },
}

SCSS

$custom: #1d99bb;
$custom-light: #77b7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d99bb",
  "rgb": {
    "r": 29,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 192.911,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.63508,
    "c": 0.11138,
    "h": 222.3
  },
  "luminance": 0.26632
}

Semantic roles & 50–950 ramp

primary

#1D99BB

secondary

#CE7C66

accent

#6038F0

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1D99BB

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

Preview Lab → · Contrast checker → · Palette generator →