#397EB1#397EB1

#397EB1 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.2% C 0.105 H 243.6°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#397EB1
RGB	rgb(57, 126, 177)
HSL	hsl(206, 51%, 46%)
HSV	hsv(206, 68%, 69%)
CMYK	cmyk(67.8%, 28.8%, 0%, 30.6%)
CIE-LAB	lab(50.65, -5.10, -33.35)
CIE-LCH	lch(50.65, 33.73, 261.30°)
OKLab	oklab(57.18% -0.0468 -0.0941)
OKLCH	oklch(57.18% 0.105 243.6)
XYZ	xyz(17.0810, 18.9641, 44.3467)
Luminance	0.1897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397EB1 #B16C39

analogous

#39B1A8 #397EB1 #3942B1

triadic

#397EB1 #B1397E #7EB139

tetradic

#397EB1 #A839B1 #B16C39 #42B139

square

#397EB1 #A839B1 #B16C39 #42B139

split-complementary

#397EB1 #B13942 #B1A839

monochromatic

#1B3C54 #2A5D83 #397EB1 #5D9CCB #8BB8DA

Accessibility & contrast

On white

4.38

#397EB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#397EB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397EB1

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397EB1	#FFFFFF	#000000	##000000
##397EB1	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677FB3

Deuteranopia (green-blind)

#5773B0

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #397eb1;
/* rgb */ color: rgb(57, 126, 177);
/* oklch */ color: oklch(57.2% 0.105 243.6);

Tailwind

colors: {
  custom: {
    50: '#7da3c8',
    500: '#397eb1',
    950: '#000000',
  },
}

SCSS

$custom: #397eb1;
$custom-light: #7da3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#397eb1",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 177
  },
  "hsl": {
    "h": 205.5,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57181,
    "c": 0.10509,
    "h": 243.6
  },
  "luminance": 0.18966
}

Semantic roles & 50–950 ramp

primary

#397EB1

secondary

#C49E82

accent

#894DDB

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #397EB1

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

Preview Lab → · Contrast checker → · Palette generator →