#397DBB#397DBB

#397DBB is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.118 H 248.8°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#397DBB
RGB	rgb(57, 125, 187)
HSL	hsl(209, 53%, 48%)
HSV	hsv(209, 70%, 73%)
CMYK	cmyk(69.5%, 33.2%, 0%, 26.7%)
CIE-LAB	lab(50.83, -1.00, -38.81)
CIE-LCH	lch(50.83, 38.83, 268.52°)
OKLab	oklab(57.49% -0.0427 -0.11)
OKLCH	oklch(57.49% 0.118 248.8)
XYZ	xyz(17.9872, 19.1230, 49.7472)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397DBB #BB7739

analogous

#39BBB8 #397DBB #393CBB

triadic

#397DBB #BB397D #7DBB39

tetradic

#397DBB #B839BB #BB7739 #3CBB39

square

#397DBB #B839BB #BB7739 #3CBB39

split-complementary

#397DBB #BB393C #BBB839

monochromatic

#1C3E5D #2B5E8C #397DBB #629BCF #91B9DD

Accessibility & contrast

On white

4.35

#397DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#397DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397DBB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397DBB	#FFFFFF	#000000	##000000
##397DBB	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6180BE

Deuteranopia (green-blind)

#4F73BA

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #397dbb;
/* rgb */ color: rgb(57, 125, 187);
/* oklch */ color: oklch(57.5% 0.118 248.8);

Tailwind

colors: {
  custom: {
    50: '#7ea2d0',
    500: '#397dbb',
    950: '#000000',
  },
}

SCSS

$custom: #397dbb;
$custom-light: #7ea2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#397dbb",
  "rgb": {
    "r": 57,
    "g": 125,
    "b": 187
  },
  "hsl": {
    "h": 208.615,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57486,
    "c": 0.11803,
    "h": 248.8
  },
  "luminance": 0.19125
}

Semantic roles & 50–950 ramp

primary

#397DBB

secondary

#C8A687

accent

#914BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #397DBB

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

Preview Lab → · Contrast checker → · Palette generator →