#1F91BC#1F91BC

#1F91BC is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.6% C 0.114 H 229.6°. Best body text is #000000 at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F91BC
RGB	rgb(31, 145, 188)
HSL	hsl(196, 72%, 43%)
HSV	hsv(196, 84%, 74%)
CMYK	cmyk(83.5%, 22.9%, 0%, 26.3%)
CIE-LAB	lab(56.26, -15.24, -30.93)
CIE-LCH	lch(56.26, 34.48, 243.78°)
OKLab	oklab(61.63% -0.074 -0.0871)
OKLCH	oklch(61.63% 0.114 229.6)
XYZ	xyz(19.7638, 24.1704, 51.1909)
Luminance	0.2417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F91BC #BC4A1F

analogous

#1FBC98 #1F91BC #1F43BC

triadic

#1F91BC #BC1F91 #91BC1F

tetradic

#1F91BC #981FBC #BC4A1F #43BC1F

square

#1F91BC #981FBC #BC4A1F #43BC1F

split-complementary

#1F91BC #BC1F43 #BC981F

monochromatic

#0E4053 #166887 #1F91BC #3AB1DE #6EC6E7

Accessibility & contrast

On white

3.60

#1F91BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.83

#1F91BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F91BC

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F91BC	#FFFFFF	#000000	##000000
##1F91BC	1.00	3.60	5.83	5.83
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.83	21.00	1.00	1.00
##000000	5.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8FBE

Deuteranopia (green-blind)

#6681BB

Tritanopia (blue-blind)

#009D9F

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #1f91bc;
/* rgb */ color: rgb(31, 145, 188);
/* oklch */ color: oklch(61.6% 0.114 229.6);

Tailwind

colors: {
  custom: {
    50: '#77b1d0',
    500: '#1f91bc',
    950: '#000000',
  },
}

SCSS

$custom: #1f91bc;
$custom-light: #77b1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f91bc",
  "rgb": {
    "r": 31,
    "g": 145,
    "b": 188
  },
  "hsl": {
    "h": 196.433,
    "s": 71.689,
    "l": 42.941
  },
  "oklch": {
    "l": 0.61629,
    "c": 0.11435,
    "h": 229.6
  },
  "luminance": 0.24173
}

Semantic roles & 50–950 ramp

primary

#1F91BC

secondary

#CD8569

accent

#6B39EE

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #1F91BC

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

Preview Lab → · Contrast checker → · Palette generator →