#1B7DB4#1B7DB4

#1B7DB4 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.3% C 0.120 H 240.0°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B7DB4
RGB	rgb(27, 125, 180)
HSL	hsl(202, 74%, 41%)
HSV	hsv(202, 85%, 71%)
CMYK	cmyk(85%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(49.73, -7.12, -36.57)
CIE-LCH	lch(49.73, 37.25, 258.98°)
OKLab	oklab(56.29% -0.0599 -0.1037)
OKLCH	oklch(56.29% 0.12 240)
XYZ	xyz(16.0205, 18.1935, 45.8385)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B7DB4 #B4521B

analogous

#1BB49E #1B7DB4 #1B30B4

triadic

#1B7DB4 #B41B7D #7DB41B

tetradic

#1B7DB4 #9E1BB4 #B4521B #30B41B

square

#1B7DB4 #9E1BB4 #B4521B #30B41B

split-complementary

#1B7DB4 #B41B30 #B49E1B

monochromatic

#0B334A #13587F #1B7DB4 #2D9FDF #62B7E7

Accessibility & contrast

On white

4.53

#1B7DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#1B7DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B7DB4

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B7DB4	#FFFFFF	#000000	##000000
##1B7DB4	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637EB6

Deuteranopia (green-blind)

#4E70B3

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #1b7db4;
/* rgb */ color: rgb(27, 125, 180);
/* oklch */ color: oklch(56.3% 0.120 240.0);

Tailwind

colors: {
  custom: {
    50: '#74a2ca',
    500: '#1b7db4',
    950: '#000000',
  },
}

SCSS

$custom: #1b7db4;
$custom-light: #74a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b7db4",
  "rgb": {
    "r": 27,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 201.569,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.56288,
    "c": 0.1198,
    "h": 240
  },
  "luminance": 0.18196
}

Semantic roles & 50–950 ramp

primary

#1B7DB4

secondary

#CC865F

accent

#7A37F1

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #1B7DB4

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

Preview Lab → · Contrast checker → · Palette generator →