#1B5CB3#1B5CB3

#1B5CB3 is a mid, vivid cyan. Relative luminance 0.111; OKLCH L 48.5% C 0.153 H 257.5°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B5CB3
RGB	rgb(27, 92, 179)
HSL	hsl(214, 74%, 40%)
HSV	hsv(214, 85%, 70%)
CMYK	cmyk(84.9%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(39.82, 13.09, -51.78)
CIE-LCH	lch(39.82, 53.41, 284.19°)
OKLab	oklab(48.51% -0.033 -0.149)
OKLCH	oklch(48.51% 0.153 257.5)
XYZ	xyz(12.4128, 11.1404, 44.1352)
Luminance	0.1114 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5CB3 #B3721B

analogous

#1BA8B3 #1B5CB3 #261BB3

triadic

#1B5CB3 #B31B5C #5CB31B

tetradic

#1B5CB3 #B31BA8 #B3721B #1BB326

square

#1B5CB3 #B31BA8 #B3721B #1BB326

split-complementary

#1B5CB3 #B3261B #A8B31B

monochromatic

#0B2549 #13417E #1B5CB3 #2C79DF #619BE7

Accessibility & contrast

On white

6.50

#1B5CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#1B5CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5CB3

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5CB3	#FFFFFF	#000000	##FFFFFF
##1B5CB3	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2965B6

Deuteranopia (green-blind)

#0057B1

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #1b5cb3;
/* rgb */ color: rgb(27, 92, 179);
/* oklch */ color: oklch(48.5% 0.153 257.5);

Tailwind

colors: {
  custom: {
    50: '#7389ca',
    500: '#1b5cb3',
    950: '#000000',
  },
}

SCSS

$custom: #1b5cb3;
$custom-light: #7389ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5cb3",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 214.342,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.48511,
    "c": 0.1526,
    "h": 257.5
  },
  "luminance": 0.11142
}

Semantic roles & 50–950 ramp

primary

#1B5CB3

secondary

#CC9D5E

accent

#A137F0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1B5CB3

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

Preview Lab → · Contrast checker → · Palette generator →