#1F739B#1F739B

#1F739B is a mid, moderate cyan. Relative luminance 0.149; OKLCH L 52.6% C 0.099 H 234.5°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F739B
RGB	rgb(31, 115, 155)
HSL	hsl(199, 67%, 36%)
HSV	hsv(199, 80%, 61%)
CMYK	cmyk(80%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(45.52, -10.17, -28.57)
CIE-LCH	lch(45.52, 30.32, 250.41°)
OKLab	oklab(52.57% -0.0575 -0.0806)
OKLCH	oklch(52.57% 0.099 234.5)
XYZ	xyz(12.6098, 14.9178, 33.2188)
Luminance	0.1492 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F739B #9B471F

analogous

#1F9B85 #1F739B #1F359B

triadic

#1F739B #9B1F73 #739B1F

tetradic

#1F739B #851F9B #9B471F #359B1F

square

#1F739B #851F9B #9B471F #359B1F

split-complementary

#1F739B #9B1F35 #9B851F

monochromatic

#0B2735 #154D68 #1F739B #2999CE #57B2DD

Accessibility & contrast

On white

5.27

#1F739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#1F739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F739B

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F739B	#FFFFFF	#000000	##FFFFFF
##1F739B	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F729D

Deuteranopia (green-blind)

#4F679A

Tritanopia (blue-blind)

#007E81

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #1f739b;
/* rgb */ color: rgb(31, 115, 155);
/* oklch */ color: oklch(52.6% 0.099 234.5);

Tailwind

colors: {
  custom: {
    50: '#6f9bb8',
    500: '#1f739b',
    950: '#000000',
  },
}

SCSS

$custom: #1f739b;
$custom-light: #6f9bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f739b",
  "rgb": {
    "r": 31,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 199.355,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.52573,
    "c": 0.09903,
    "h": 234.5
  },
  "luminance": 0.14919
}

Semantic roles & 50–950 ramp

primary

#1F739B

secondary

#C17855

accent

#753EEA

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #1F739B

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

Preview Lab → · Contrast checker → · Palette generator →