#1F55A0#1F55A0

#1F55A0 is a mid, vivid cyan. Relative luminance 0.093; OKLCH L 45.7% C 0.134 H 257.6°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F55A0
RGB	rgb(31, 85, 160)
HSL	hsl(215, 68%, 37%)
HSV	hsv(215, 81%, 63%)
CMYK	cmyk(80.6%, 46.9%, 0%, 37.3%)
CIE-LAB	lab(36.60, 10.53, -45.67)
CIE-LCH	lch(36.60, 46.87, 282.98°)
OKLab	oklab(45.66% -0.0287 -0.1311)
OKLCH	oklch(45.66% 0.134 257.6)
XYZ	xyz(10.1564, 9.3252, 34.5155)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F55A0 #A06A1F

analogous

#1F95A0 #1F55A0 #2A1FA0

triadic

#1F55A0 #A01F55 #55A01F

tetradic

#1F55A0 #A01F95 #A06A1F #1FA02A

square

#1F55A0 #A01F95 #A06A1F #1FA02A

split-complementary

#1F55A0 #A02A1F #95A01F

monochromatic

#0B1F39 #153A6D #1F55A0 #2970D3 #5A92DF

Accessibility & contrast

On white

7.33

#1F55A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1F55A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F55A0

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F55A0	#FFFFFF	#000000	##FFFFFF
##1F55A0	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5CA3

Deuteranopia (green-blind)

#0A519F

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f55a0;
/* rgb */ color: rgb(31, 85, 160);
/* oklch */ color: oklch(45.7% 0.134 257.6);

Tailwind

colors: {
  custom: {
    50: '#7084bd',
    500: '#1f55a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f55a0;
$custom-light: #7084bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f55a0",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 160
  },
  "hsl": {
    "h": 214.884,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.45658,
    "c": 0.13423,
    "h": 257.6
  },
  "luminance": 0.09326
}

Semantic roles & 50–950 ramp

primary

#1F55A0

secondary

#C39658

accent

#A23DEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F55A0

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

Preview Lab → · Contrast checker → · Palette generator →