#1F99B4#1F99B4

#1F99B4 is a light, moderate cyan. Relative luminance 0.264; OKLCH L 63.2% C 0.106 H 217.4°. Best body text is #000000 at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F99B4
RGB	rgb(31, 153, 180)
HSL	hsl(191, 71%, 41%)
HSV	hsv(191, 83%, 71%)
CMYK	cmyk(82.8%, 15%, 0%, 29.4%)
CIE-LAB	lab(58.38, -22.28, -23.11)
CIE-LCH	lch(58.38, 32.10, 226.05°)
OKLab	oklab(63.23% -0.0846 -0.0647)
OKLCH	oklch(63.23% 0.107 217.4)
XYZ	xyz(20.1910, 26.3665, 47.1962)
Luminance	0.2637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F99B4 #B43A1F

analogous

#1FB485 #1F99B4 #1F4FB4

triadic

#1F99B4 #B41F99 #99B41F

tetradic

#1F99B4 #851FB4 #B43A1F #4FB41F

square

#1F99B4 #851FB4 #B43A1F #4FB41F

split-complementary

#1F99B4 #B41F4F #B4851F

monochromatic

#0D404C #166D80 #1F99B4 #34BEDC #68CEE5

Accessibility & contrast

On white

3.35

#1F99B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.27

#1F99B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F99B4

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F99B4	#FFFFFF	#000000	##000000
##1F99B4	1.00	3.35	6.27	6.27
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.27	21.00	1.00	1.00
##000000	6.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8794B5

Deuteranopia (green-blind)

#7486B4

Tritanopia (blue-blind)

#00A2A2

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #1f99b4;
/* rgb */ color: rgb(31, 153, 180);
/* oklch */ color: oklch(63.2% 0.106 217.4);

Tailwind

colors: {
  custom: {
    50: '#77b7ca',
    500: '#1f99b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f99b4;
$custom-light: #77b7ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f99b4",
  "rgb": {
    "r": 31,
    "g": 153,
    "b": 180
  },
  "hsl": {
    "h": 190.872,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.63227,
    "c": 0.1065,
    "h": 217.4
  },
  "luminance": 0.26369
}

Semantic roles & 50–950 ramp

primary

#1F99B4

secondary

#CB7764

accent

#5B3AED

background

#F7FBFC

surface

#EEF6F8

border

#C9D0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1F99B4

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

Preview Lab → · Contrast checker → · Palette generator →