#1B5A7D#1B5A7D

#1B5A7D is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.5% C 0.085 H 237.8°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A7D
RGB	rgb(27, 90, 125)
HSL	hsl(201, 64%, 30%)
HSV	hsv(201, 78%, 49%)
CMYK	cmyk(78.4%, 28%, 0%, 51%)
CIE-LAB	lab(36.03, -6.92, -25.34)
CIE-LCH	lch(36.03, 26.27, 254.73°)
OKLab	oklab(44.53% -0.0451 -0.0716)
OKLCH	oklch(44.53% 0.085 237.8)
XYZ	xyz(7.8084, 9.0251, 20.7285)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A7D #7D3E1B

analogous

#1B7D6F #1B5A7D #1B297D

triadic

#1B5A7D #7D1B5A #5A7D1B

tetradic

#1B5A7D #6F1B7D #7D3E1B #297D1B

square

#1B5A7D #6F1B7D #7D3E1B #297D1B

split-complementary

#1B5A7D #7D1B29 #7D6F1B

monochromatic

#051219 #10364B #1B5A7D #267EAF #3D9FD5

Accessibility & contrast

On white

7.49

#1B5A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1B5A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A7D

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A7D	#FFFFFF	#000000	##FFFFFF
##1B5A7D	1.00	7.49	2.81	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495A7F

Deuteranopia (green-blind)

#3C517C

Tritanopia (blue-blind)

#006366

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5a7d;
/* rgb */ color: rgb(27, 90, 125);
/* oklch */ color: oklch(44.5% 0.085 237.8);

Tailwind

colors: {
  custom: {
    50: '#6788a3',
    500: '#1b5a7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a7d;
$custom-light: #6788a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a7d",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 125
  },
  "hsl": {
    "h": 201.429,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.44526,
    "c": 0.08459,
    "h": 237.8
  },
  "luminance": 0.09026
}

Semantic roles & 50–950 ramp

primary

#1B5A7D

secondary

#B16A43

accent

#7C40E7

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5A7D

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

Preview Lab → · Contrast checker → · Palette generator →