#397BB8#397BB8

#397BB8 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.9% C 0.116 H 249.0°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#397BB8
RGB	rgb(57, 123, 184)
HSL	hsl(209, 53%, 47%)
HSV	hsv(209, 69%, 72%)
CMYK	cmyk(69%, 33.2%, 0%, 27.8%)
CIE-LAB	lab(50.09, -0.87, -38.25)
CIE-LCH	lch(50.09, 38.26, 268.70°)
OKLab	oklab(56.86% -0.0416 -0.1084)
OKLCH	oklch(56.86% 0.116 249)
XYZ	xyz(17.4188, 18.4946, 47.9899)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397BB8 #B87639

analogous

#39B8B6 #397BB8 #393CB8

triadic

#397BB8 #B8397B #7BB839

tetradic

#397BB8 #B639B8 #B87639 #3CB839

square

#397BB8 #B639B8 #B87639 #3CB839

split-complementary

#397BB8 #B8393C #B8B639

monochromatic

#1C3D5B #2B5C89 #397BB8 #6099CE #8FB7DC

Accessibility & contrast

On white

4.47

#397BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#397BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397BB8

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397BB8	#FFFFFF	#000000	##000000
##397BB8	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)

#607EBB

Deuteranopia (green-blind)

#4E72B7

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #397bb8;
/* rgb */ color: rgb(57, 123, 184);
/* oklch */ color: oklch(56.9% 0.116 249.0);

Tailwind

colors: {
  custom: {
    50: '#7ea0cd',
    500: '#397bb8',
    950: '#000000',
  },
}

SCSS

$custom: #397bb8;
$custom-light: #7ea0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#397bb8",
  "rgb": {
    "r": 57,
    "g": 123,
    "b": 184
  },
  "hsl": {
    "h": 208.819,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56855,
    "c": 0.11612,
    "h": 249
  },
  "luminance": 0.18496
}

Semantic roles & 50–950 ramp

primary

#397BB8

secondary

#C7A586

accent

#914CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #397BB8

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

Preview Lab → · Contrast checker → · Palette generator →