#397DAB#397DAB

#397DAB is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.099 H 241.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#397DAB
RGB	rgb(57, 125, 171)
HSL	hsl(204, 50%, 45%)
HSV	hsv(204, 67%, 67%)
CMYK	cmyk(66.7%, 26.9%, 0%, 32.9%)
CIE-LAB	lab(50.07, -6.59, -30.78)
CIE-LCH	lch(50.07, 31.47, 257.91°)
OKLab	oklab(56.63% -0.0477 -0.0867)
OKLCH	oklch(56.63% 0.099 241.2)
XYZ	xyz(16.3688, 18.4757, 41.2237)
Luminance	0.1848 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DAB #AB6739

analogous

#39ABA0 #397DAB #3944AB

triadic

#397DAB #AB397D #7DAB39

tetradic

#397DAB #A039AB #AB6739 #44AB39

square

#397DAB #A039AB #AB6739 #44AB39

split-complementary

#397DAB #AB3944 #ABA039

monochromatic

#1A3A4F #2A5B7D #397DAB #599BC8 #87B7D7

Accessibility & contrast

On white

4.47

#397DAB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#397DAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DAB

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DAB	#FFFFFF	#000000	##000000
##397DAB	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687DAD

Deuteranopia (green-blind)

#5872AA

Tritanopia (blue-blind)

#00888D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397dab;
/* rgb */ color: rgb(57, 125, 171);
/* oklch */ color: oklch(56.6% 0.099 241.2);

Tailwind

colors: {
  custom: {
    50: '#7ca2c4',
    500: '#397dab',
    950: '#000000',
  },
}

SCSS

$custom: #397dab;
$custom-light: #7ca2c4;
$custom-dark: #000000;

JSON

{
  "hex": "#397dab",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 171
  },
  "hsl": {
    "h": 204.211,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.56633,
    "c": 0.09892,
    "h": 241.2
  },
  "luminance": 0.18477
}

Semantic roles & 50–950 ramp

primary

#397DAB

secondary

#C1997F

accent

#864EDA

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #397DAB

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

Preview Lab → · Contrast checker → · Palette generator →