#397EBB#397EBB

#397EBB is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.117 H 248.1°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#397EBB
RGB	rgb(57, 126, 187)
HSL	hsl(208, 53%, 48%)
HSV	hsv(208, 70%, 73%)
CMYK	cmyk(69.5%, 32.6%, 0%, 26.7%)
CIE-LAB	lab(51.13, -1.60, -38.35)
CIE-LCH	lch(51.13, 38.38, 267.62°)
OKLab	oklab(57.72% -0.0437 -0.1086)
OKLCH	oklch(57.72% 0.117 248.1)
XYZ	xyz(18.1145, 19.3775, 49.7896)
Luminance	0.1938 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#397EBB #BB7639

analogous

#39BBB7 #397EBB #393DBB

triadic

#397EBB #BB397E #7EBB39

tetradic

#397EBB #B739BB #BB7639 #3DBB39

square

#397EBB #B739BB #BB7639 #3DBB39

split-complementary

#397EBB #BB393D #BBB739

monochromatic

#1C3F5D #2B5E8C #397EBB #629CCF #91BADD

Accessibility & contrast

On white

4.31

#397EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#397EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #397EBB

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##397EBB	#FFFFFF	#000000	##000000
##397EBB	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BE

Deuteranopia (green-blind)

#5174BA

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #397ebb;
/* rgb */ color: rgb(57, 126, 187);
/* oklch */ color: oklch(57.7% 0.117 248.1);

Tailwind

colors: {
  custom: {
    50: '#7ea3d0',
    500: '#397ebb',
    950: '#000000',
  },
}

SCSS

$custom: #397ebb;
$custom-light: #7ea3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#397ebb",
  "rgb": {
    "r": 57,
    "g": 126,
    "b": 187
  },
  "hsl": {
    "h": 208.154,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57718,
    "c": 0.11712,
    "h": 248.1
  },
  "luminance": 0.19379
}

Semantic roles & 50–950 ramp

primary

#397EBB

secondary

#C8A687

accent

#8F4BDD

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #397EBB

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

Preview Lab → · Contrast checker → · Palette generator →