#1B5D7D#1B5D7D

#1B5D7D is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.3% C 0.083 H 234.3°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D7D
RGB	rgb(27, 93, 125)
HSL	hsl(200, 64%, 30%)
HSV	hsv(200, 78%, 49%)
CMYK	cmyk(78.4%, 25.6%, 0%, 51%)
CIE-LAB	lab(37.01, -8.75, -23.82)
CIE-LCH	lch(37.01, 25.38, 249.84°)
OKLab	oklab(45.3% -0.0482 -0.0671)
OKLCH	oklch(45.3% 0.083 234.3)
XYZ	xyz(8.0665, 9.5414, 20.8146)
Luminance	0.0954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D7D #7D3B1B

analogous

#1B7D6C #1B5D7D #1B2C7D

triadic

#1B5D7D #7D1B5D #5D7D1B

tetradic

#1B5D7D #6C1B7D #7D3B1B #2C7D1B

square

#1B5D7D #6C1B7D #7D3B1B #2C7D1B

split-complementary

#1B5D7D #7D1B2C #7D6C1B

monochromatic

#051319 #10384B #1B5D7D #2682AF #3DA4D5

Accessibility & contrast

On white

7.22

#1B5D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#1B5D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D7D

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D7D	#FFFFFF	#000000	##FFFFFF
##1B5D7D	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D5C7F

Deuteranopia (green-blind)

#40537C

Tritanopia (blue-blind)

#006568

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5d7d;
/* rgb */ color: rgb(27, 93, 125);
/* oklch */ color: oklch(45.3% 0.083 234.3);

Tailwind

colors: {
  custom: {
    50: '#678aa2',
    500: '#1b5d7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d7d;
$custom-light: #678aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d7d",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 125
  },
  "hsl": {
    "h": 199.592,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.45301,
    "c": 0.08265,
    "h": 234.3
  },
  "luminance": 0.09542
}

Semantic roles & 50–950 ramp

primary

#1B5D7D

secondary

#B16743

accent

#7740E7

background

#F6F8FA

surface

#EBF0F3

border

#C6CBCD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5D7D

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

Preview Lab → · Contrast checker → · Palette generator →