#1F749B#1F749B

#1F749B is a mid, moderate cyan. Relative luminance 0.151; OKLCH L 52.8% C 0.098 H 233.5°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F749B
RGB	rgb(31, 116, 155)
HSL	hsl(199, 67%, 36%)
HSV	hsv(199, 80%, 61%)
CMYK	cmyk(80%, 25.2%, 0%, 39.2%)
CIE-LAB	lab(45.84, -10.75, -28.08)
CIE-LCH	lch(45.84, 30.07, 249.05°)
OKLab	oklab(52.82% -0.0585 -0.0792)
OKLCH	oklch(52.82% 0.098 233.5)
XYZ	xyz(12.7245, 15.1471, 33.2570)
Luminance	0.1515 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F749B #9B461F

analogous

#1F9B84 #1F749B #1F369B

triadic

#1F749B #9B1F74 #749B1F

tetradic

#1F749B #841F9B #9B461F #369B1F

square

#1F749B #841F9B #9B461F #369B1F

split-complementary

#1F749B #9B1F36 #9B841F

monochromatic

#0B2835 #154E68 #1F749B #299ACE #57B3DD

Accessibility & contrast

On white

5.21

#1F749B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#1F749B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F749B

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F749B	#FFFFFF	#000000	##FFFFFF
##1F749B	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61739D

Deuteranopia (green-blind)

#50679A

Tritanopia (blue-blind)

#007E81

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #1f749b;
/* rgb */ color: rgb(31, 116, 155);
/* oklch */ color: oklch(52.8% 0.098 233.5);

Tailwind

colors: {
  custom: {
    50: '#6f9cb8',
    500: '#1f749b',
    950: '#000000',
  },
}

SCSS

$custom: #1f749b;
$custom-light: #6f9cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f749b",
  "rgb": {
    "r": 31,
    "g": 116,
    "b": 155
  },
  "hsl": {
    "h": 198.871,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.52822,
    "c": 0.09844,
    "h": 233.5
  },
  "luminance": 0.15149
}

Semantic roles & 50–950 ramp

primary

#1F749B

secondary

#C17755

accent

#743EEA

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #1F749B

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

Preview Lab → · Contrast checker → · Palette generator →