#1F77A8#1F77A8

#1F77A8 is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 54.3% C 0.110 H 238.9°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F77A8
RGB	rgb(31, 119, 168)
HSL	hsl(201, 69%, 39%)
HSV	hsv(201, 82%, 66%)
CMYK	cmyk(81.5%, 29.2%, 0%, 34.1%)
CIE-LAB	lab(47.38, -7.71, -33.29)
CIE-LCH	lch(47.38, 34.17, 256.96°)
OKLab	oklab(54.25% -0.0569 -0.0942)
OKLCH	oklch(54.25% 0.11 238.9)
XYZ	xyz(14.2270, 16.3104, 39.4366)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F77A8 #A8501F

analogous

#1FA895 #1F77A8 #1F33A8

triadic

#1F77A8 #A81F77 #77A81F

tetradic

#1F77A8 #951FA8 #A8501F #33A81F

square

#1F77A8 #951FA8 #A8501F #33A81F

split-complementary

#1F77A8 #A81F33 #A8951F

monochromatic

#0C2E41 #155274 #1F77A8 #2C9BD8 #60B3E2

Accessibility & contrast

On white

4.93

#1F77A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#1F77A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F77A8

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F77A8	#FFFFFF	#000000	##FFFFFF
##1F77A8	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6077AA

Deuteranopia (green-blind)

#4D6BA7

Tritanopia (blue-blind)

#008388

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #1f77a8;
/* rgb */ color: rgb(31, 119, 168);
/* oklch */ color: oklch(54.3% 0.110 238.9);

Tailwind

colors: {
  custom: {
    50: '#729ec2',
    500: '#1f77a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f77a8;
$custom-light: #729ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f77a8",
  "rgb": {
    "r": 31,
    "g": 119,
    "b": 168
  },
  "hsl": {
    "h": 201.46,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.54252,
    "c": 0.11007,
    "h": 238.9
  },
  "luminance": 0.16312
}

Semantic roles & 50–950 ramp

primary

#1F77A8

secondary

#C6825D

accent

#7B3CEC

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #1F77A8

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

Preview Lab → · Contrast checker → · Palette generator →