#1B7BB4#1B7BB4

#1B7BB4 is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.121 H 241.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B7BB4
RGB	rgb(27, 123, 180)
HSL	hsl(202, 74%, 41%)
HSV	hsv(202, 85%, 71%)
CMYK	cmyk(85%, 31.7%, 0%, 29.4%)
CIE-LAB	lab(49.12, -5.95, -37.53)
CIE-LCH	lch(49.12, 37.99, 261.00°)
OKLab	oklab(55.81% -0.0581 -0.1066)
OKLCH	oklch(55.81% 0.121 241.4)
XYZ	xyz(15.7699, 17.6922, 45.7549)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B7BB4 #B4541B

analogous

#1BB4A0 #1B7BB4 #1B2EB4

triadic

#1B7BB4 #B41B7B #7BB41B

tetradic

#1B7BB4 #A01BB4 #B4541B #2EB41B

square

#1B7BB4 #A01BB4 #B4541B #2EB41B

split-complementary

#1B7BB4 #B41B2E #B4A01B

monochromatic

#0B324A #13577F #1B7BB4 #2D9DDF #62B6E7

Accessibility & contrast

On white

4.63

#1B7BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#1B7BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #1B7BB4

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B7BB4	#FFFFFF	#000000	##FFFFFF
##1B7BB4	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607CB6

Deuteranopia (green-blind)

#4B6FB3

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #1b7bb4;
/* rgb */ color: rgb(27, 123, 180);
/* oklch */ color: oklch(55.8% 0.121 241.4);

Tailwind

colors: {
  custom: {
    50: '#73a1ca',
    500: '#1b7bb4',
    950: '#000000',
  },
}

SCSS

$custom: #1b7bb4;
$custom-light: #73a1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b7bb4",
  "rgb": {
    "r": 27,
    "g": 123,
    "b": 180
  },
  "hsl": {
    "h": 202.353,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.55805,
    "c": 0.12139,
    "h": 241.4
  },
  "luminance": 0.17694
}

Semantic roles & 50–950 ramp

primary

#1B7BB4

secondary

#CC875F

accent

#7C37F1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #1B7BB4

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

Preview Lab → · Contrast checker → · Palette generator →