#1B5B8E#1B5B8E

#1B5B8E is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.8% C 0.104 H 247.2°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B8E
RGB	rgb(27, 91, 142)
HSL	hsl(207, 68%, 33%)
HSV	hsv(207, 81%, 56%)
CMYK	cmyk(81%, 35.9%, 0%, 44.3%)
CIE-LAB	lab(37.24, -0.96, -33.82)
CIE-LCH	lch(37.24, 33.83, 268.38°)
OKLab	oklab(45.77% -0.0405 -0.0962)
OKLCH	oklch(45.77% 0.104 247.2)
XYZ	xyz(9.0737, 9.6671, 26.9737)
Luminance	0.0967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B8E #8E4E1B

analogous

#1B8E87 #1B5B8E #1B218E

triadic

#1B5B8E #8E1B5B #5B8E1B

tetradic

#1B5B8E #871B8E #8E4E1B #218E1B

square

#1B5B8E #871B8E #8E4E1B #218E1B

split-complementary

#1B5B8E #8E1B21 #8E871B

monochromatic

#071927 #113A5B #1B5B8E #257CC1 #479ADC

Accessibility & contrast

On white

7.16

#1B5B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#1B5B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B8E

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B8E	#FFFFFF	#000000	##FFFFFF
##1B5B8E	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#435D90

Deuteranopia (green-blind)

#32538D

Tritanopia (blue-blind)

#00676E

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b5b8e;
/* rgb */ color: rgb(27, 91, 142);
/* oklch */ color: oklch(45.8% 0.104 247.2);

Tailwind

colors: {
  custom: {
    50: '#6a89af',
    500: '#1b5b8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b8e;
$custom-light: #6a89af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b8e",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 142
  },
  "hsl": {
    "h": 206.609,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.4577,
    "c": 0.10444,
    "h": 247.2
  },
  "luminance": 0.09668
}

Semantic roles & 50–950 ramp

primary

#1B5B8E

secondary

#BE7C47

accent

#8A3DEB

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B5B8E

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

Preview Lab → · Contrast checker → · Palette generator →