#1F57A5#1F57A5

#1F57A5 is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.5% C 0.139 H 257.7°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#1F57A5
RGB	rgb(31, 87, 165)
HSL	hsl(215, 68%, 38%)
HSV	hsv(215, 81%, 65%)
CMYK	cmyk(81.2%, 47.3%, 0%, 35.3%)
CIE-LAB	lab(37.52, 11.19, -47.18)
CIE-LCH	lch(37.52, 48.49, 283.34°)
OKLab	oklab(46.47% -0.0295 -0.1355)
OKLCH	oklch(46.47% 0.139 257.7)
XYZ	xyz(10.7623, 9.8230, 36.9188)
Luminance	0.0982 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F57A5 #A56D1F

analogous

#1F9AA5 #1F57A5 #2A1FA5

triadic

#1F57A5 #A51F57 #57A51F

tetradic

#1F57A5 #A51F9A #A56D1F #1FA52A

square

#1F57A5 #A51F9A #A56D1F #1FA52A

split-complementary

#1F57A5 #A52A1F #9AA51F

monochromatic

#0C213E #153C71 #1F57A5 #2A72D7 #5E94E1

Accessibility & contrast

On white

7.08

#1F57A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#1F57A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F57A5

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F57A5	#FFFFFF	#000000	##FFFFFF
##1F57A5	1.00	7.08	2.96	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5FA8

Deuteranopia (green-blind)

#0453A3

Tritanopia (blue-blind)

#006A76

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f57a5;
/* rgb */ color: rgb(31, 87, 165);
/* oklch */ color: oklch(46.5% 0.139 257.7);

Tailwind

colors: {
  custom: {
    50: '#7185c0',
    500: '#1f57a5',
    950: '#000000',
  },
}

SCSS

$custom: #1f57a5;
$custom-light: #7185c0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f57a5",
  "rgb": {
    "r": 31,
    "g": 87,
    "b": 165
  },
  "hsl": {
    "h": 214.925,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.46473,
    "c": 0.13869,
    "h": 257.7
  },
  "luminance": 0.09824
}

Semantic roles & 50–950 ramp

primary

#1F57A5

secondary

#C5995B

accent

#A23DEB

background

#F7F8FB

surface

#EDEFF7

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #1F57A5

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

Preview Lab → · Contrast checker → · Palette generator →