#1B57AA#1B57AA

#1B57AA is a mid, vivid cyan. Relative luminance 0.100; OKLCH L 46.7% C 0.147 H 257.9°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B57AA
RGB	rgb(27, 87, 170)
HSL	hsl(215, 73%, 39%)
HSV	hsv(215, 84%, 67%)
CMYK	cmyk(84.1%, 48.8%, 0%, 33.3%)
CIE-LAB	lab(37.75, 12.80, -49.79)
CIE-LCH	lch(37.75, 51.41, 284.42°)
OKLab	oklab(46.73% -0.0308 -0.1432)
OKLCH	oklch(46.73% 0.147 257.9)
XYZ	xyz(11.1132, 9.9503, 39.3573)
Luminance	0.0995 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B57AA #AA6E1B

analogous

#1B9EAA #1B57AA #261BAA

triadic

#1B57AA #AA1B57 #57AA1B

tetradic

#1B57AA #AA1B9E #AA6E1B #1BAA26

square

#1B57AA #AA1B9E #AA6E1B #1BAA26

split-complementary

#1B57AA #AA261B #9EAA1B

monochromatic

#0A2140 #133C75 #1B57AA #2672DC #5B95E5

Accessibility & contrast

On white

7.02

#1B57AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#1B57AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B57AA

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B57AA	#FFFFFF	#000000	##FFFFFF
##1B57AA	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2660AD

Deuteranopia (green-blind)

#0053A8

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b57aa;
/* rgb */ color: rgb(27, 87, 170);
/* oklch */ color: oklch(46.7% 0.147 257.9);

Tailwind

colors: {
  custom: {
    50: '#7185c4',
    500: '#1b57aa',
    950: '#000000',
  },
}

SCSS

$custom: #1b57aa;
$custom-light: #7185c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b57aa",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 170
  },
  "hsl": {
    "h": 214.825,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.46728,
    "c": 0.14651,
    "h": 257.9
  },
  "luminance": 0.09952
}

Semantic roles & 50–950 ramp

primary

#1B57AA

secondary

#C99958

accent

#A339EF

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1B57AA

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

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