#1B5797#1B5797

#1B5797 is a mid, vivid cyan. Relative luminance 0.093; OKLCH L 45.4% C 0.121 H 253.4°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B5797
RGB	rgb(27, 87, 151)
HSL	hsl(211, 70%, 35%)
HSV	hsv(211, 82%, 59%)
CMYK	cmyk(82.1%, 42.4%, 0%, 40.8%)
CIE-LAB	lab(36.52, 5.19, -40.40)
CIE-LCH	lch(36.52, 40.73, 277.32°)
OKLab	oklab(45.38% -0.0345 -0.1156)
OKLCH	oklch(45.38% 0.121 253.4)
XYZ	xyz(9.4440, 9.2826, 30.5661)
Luminance	0.0928 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5797 #975B1B

analogous

#1B9597 #1B5797 #1D1B97

triadic

#1B5797 #971B57 #57971B

tetradic

#1B5797 #971B95 #975B1B #1B971D

square

#1B5797 #971B95 #975B1B #1B971D

split-complementary

#1B5797 #971D1B #95971B

monochromatic

#081B2F #123963 #1B5797 #2475CB #4D94DF

Accessibility & contrast

On white

7.35

#1B5797 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1B5797 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5797

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5797	#FFFFFF	#000000	##FFFFFF
##1B5797	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375C9A

Deuteranopia (green-blind)

#215196

Tritanopia (blue-blind)

#00666F

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5797;
/* rgb */ color: rgb(27, 87, 151);
/* oklch */ color: oklch(45.4% 0.121 253.4);

Tailwind

colors: {
  custom: {
    50: '#6c85b6',
    500: '#1b5797',
    950: '#000000',
  },
}

SCSS

$custom: #1b5797;
$custom-light: #6c85b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5797",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 151
  },
  "hsl": {
    "h": 210.968,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.4538,
    "c": 0.12067,
    "h": 253.4
  },
  "luminance": 0.09284
}

Semantic roles & 50–950 ramp

primary

#1B5797

secondary

#C1894C

accent

#973BEC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1B5797

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

Preview Lab → · Contrast checker → · Palette generator →