#1F9BB4#1F9BB4

#1F9BB4 is a light, moderate cyan. Relative luminance 0.270; OKLCH L 63.7% C 0.106 H 215.6°. Best body text is #000000 at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F9BB4
RGB	rgb(31, 155, 180)
HSL	hsl(190, 71%, 41%)
HSV	hsv(190, 83%, 71%)
CMYK	cmyk(82.8%, 13.9%, 0%, 29.4%)
CIE-LAB	lab(59.00, -23.32, -22.17)
CIE-LCH	lch(59.00, 32.17, 223.56°)
OKLab	oklab(63.72% -0.0865 -0.062)
OKLCH	oklch(63.72% 0.106 215.6)
XYZ	xyz(20.5211, 27.0267, 47.3063)
Luminance	0.2703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F9BB4 #B4381F

analogous

#1FB483 #1F9BB4 #1F51B4

triadic

#1F9BB4 #B41F9B #9BB41F

tetradic

#1F9BB4 #831FB4 #B4381F #51B41F

square

#1F9BB4 #831FB4 #B4381F #51B41F

split-complementary

#1F9BB4 #B41F51 #B4831F

monochromatic

#0D414C #166E80 #1F9BB4 #34C0DC #68D0E5

Accessibility & contrast

On white

3.28

#1F9BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.41

#1F9BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F9BB4

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F9BB4	#FFFFFF	#000000	##000000
##1F9BB4	1.00	3.28	6.41	6.41
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.41	21.00	1.00	1.00
##000000	6.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A96B5

Deuteranopia (green-blind)

#7788B4

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #1f9bb4;
/* rgb */ color: rgb(31, 155, 180);
/* oklch */ color: oklch(63.7% 0.106 215.6);

Tailwind

colors: {
  custom: {
    50: '#77b8ca',
    500: '#1f9bb4',
    950: '#000000',
  },
}

SCSS

$custom: #1f9bb4;
$custom-light: #77b8ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f9bb4",
  "rgb": {
    "r": 31,
    "g": 155,
    "b": 180
  },
  "hsl": {
    "h": 190.067,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.63724,
    "c": 0.10643,
    "h": 215.6
  },
  "luminance": 0.27029
}

Semantic roles & 50–950 ramp

primary

#1F9BB4

secondary

#CB7564

accent

#583AED

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #1F9BB4

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

Preview Lab → · Contrast checker → · Palette generator →