#1B739F#1B739F

#1B739F is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 52.7% C 0.104 H 236.4°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B739F
RGB	rgb(27, 115, 159)
HSL	hsl(200, 71%, 36%)
HSV	hsv(200, 83%, 62%)
CMYK	cmyk(83%, 27.7%, 0%, 37.6%)
CIE-LAB	lab(45.63, -9.10, -30.76)
CIE-LCH	lch(45.63, 32.08, 253.52°)
OKLab	oklab(52.7% -0.0577 -0.087)
OKLCH	oklch(52.7% 0.104 236.4)
XYZ	xyz(12.8382, 14.9961, 35.0121)
Luminance	0.1500 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B739F #9F471B

analogous

#1B9F89 #1B739F #1B319F

triadic

#1B739F #9F1B73 #739F1B

tetradic

#1B739F #891B9F #9F471B #319F1B

square

#1B739F #891B9F #9F471B #319F1B

split-complementary

#1B739F #9F1B31 #9F891B

monochromatic

#092736 #124D6B #1B739F #2499D3 #53B2E2

Accessibility & contrast

On white

5.25

#1B739F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#1B739F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B739F

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B739F	#FFFFFF	#000000	##FFFFFF
##1B739F	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E73A1

Deuteranopia (green-blind)

#4C679E

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #1b739f;
/* rgb */ color: rgb(27, 115, 159);
/* oklch */ color: oklch(52.7% 0.104 236.4);

Tailwind

colors: {
  custom: {
    50: '#6f9bbb',
    500: '#1b739f',
    950: '#000000',
  },
}

SCSS

$custom: #1b739f;
$custom-light: #6f9bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b739f",
  "rgb": {
    "r": 27,
    "g": 115,
    "b": 159
  },
  "hsl": {
    "h": 200,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.52697,
    "c": 0.10441,
    "h": 236.4
  },
  "luminance": 0.14998
}

Semantic roles & 50–950 ramp

primary

#1B739F

secondary

#C57851

accent

#763AEE

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #1B739F

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

Preview Lab → · Contrast checker → · Palette generator →