#1F5B9D#1F5B9D

#1F5B9D is a mid, vivid cyan. Relative luminance 0.102; OKLCH L 46.8% C 0.123 H 253.7°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F5B9D
RGB	rgb(31, 91, 157)
HSL	hsl(211, 67%, 37%)
HSV	hsv(211, 80%, 62%)
CMYK	cmyk(80.3%, 42%, 0%, 38.4%)
CIE-LAB	lab(38.21, 5.40, -41.30)
CIE-LCH	lch(38.21, 41.65, 277.45°)
OKLab	oklab(46.84% -0.0345 -0.1181)
OKLCH	oklch(46.84% 0.123 253.7)
XYZ	xyz(10.3897, 10.2066, 33.3142)
Luminance	0.1021 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5B9D #9D611F

analogous

#1F9A9D #1F5B9D #221F9D

triadic

#1F5B9D #9D1F5B #5B9D1F

tetradic

#1F5B9D #9D1F9A #9D611F #1F9D22

square

#1F5B9D #9D1F9A #9D611F #1F9D22

split-complementary

#1F5B9D #9D221F #9A9D1F

monochromatic

#0B2037 #153D6A #1F5B9D #2979D0 #5898DE

Accessibility & contrast

On white

6.90

#1F5B9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1F5B9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5B9D

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5B9D	#FFFFFF	#000000	##FFFFFF
##1F5B9D	1.00	6.90	3.04	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B60A0

Deuteranopia (green-blind)

#25559C

Tritanopia (blue-blind)

#006B74

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1f5b9d;
/* rgb */ color: rgb(31, 91, 157);
/* oklch */ color: oklch(46.8% 0.123 253.7);

Tailwind

colors: {
  custom: {
    50: '#6f88ba',
    500: '#1f5b9d',
    950: '#000000',
  },
}

SCSS

$custom: #1f5b9d;
$custom-light: #6f88ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5b9d",
  "rgb": {
    "r": 31,
    "g": 91,
    "b": 157
  },
  "hsl": {
    "h": 211.429,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46843,
    "c": 0.12308,
    "h": 253.7
  },
  "luminance": 0.10208
}

Semantic roles & 50–950 ramp

primary

#1F5B9D

secondary

#C28E56

accent

#983EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #1F5B9D

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

Preview Lab → · Contrast checker → · Palette generator →