#397FAB#397FAB

#397FAB is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.1% C 0.098 H 239.3°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#397FAB
RGB	rgb(57, 127, 171)
HSL	hsl(203, 50%, 45%)
HSV	hsv(203, 67%, 67%)
CMYK	cmyk(66.7%, 25.7%, 0%, 32.9%)
CIE-LAB	lab(50.67, -7.76, -29.83)
CIE-LCH	lch(50.67, 30.83, 255.43°)
OKLab	oklab(57.11% -0.0498 -0.0839)
OKLCH	oklch(57.11% 0.098 239.3)
XYZ	xyz(16.6246, 18.9871, 41.3089)
Luminance	0.1899 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397FAB #AB6539

analogous

#39AB9E #397FAB #3946AB

triadic

#397FAB #AB397F #7FAB39

tetradic

#397FAB #9E39AB #AB6539 #46AB39

square

#397FAB #9E39AB #AB6539 #46AB39

split-complementary

#397FAB #AB3946 #AB9E39

monochromatic

#1A3B4F #2A5D7D #397FAB #599DC8 #87B8D7

Accessibility & contrast

On white

4.38

#397FAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#397FAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397FAB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397FAB	#FFFFFF	#000000	##000000
##397FAB	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7FAD

Deuteranopia (green-blind)

#5B74AA

Tritanopia (blue-blind)

#008A8E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #397fab;
/* rgb */ color: rgb(57, 127, 171);
/* oklch */ color: oklch(57.1% 0.098 239.3);

Tailwind

colors: {
  custom: {
    50: '#7ca4c4',
    500: '#397fab',
    950: '#000000',
  },
}

SCSS

$custom: #397fab;
$custom-light: #7ca4c4;
$custom-dark: #000000;

JSON

{
  "hex": "#397fab",
  "rgb": {
    "r": 57,
    "g": 127,
    "b": 171
  },
  "hsl": {
    "h": 203.158,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.57112,
    "c": 0.0976,
    "h": 239.3
  },
  "luminance": 0.18989
}

Semantic roles & 50–950 ramp

primary

#397FAB

secondary

#C1987F

accent

#844EDA

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #397FAB

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

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