#40739B#40739B

#40739B is a mid, moderate cyan. Relative luminance 0.157; OKLCH L 53.7% C 0.084 H 243.9°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#40739B
RGB	rgb(64, 115, 155)
HSL	hsl(206, 42%, 43%)
HSV	hsv(206, 59%, 61%)
CMYK	cmyk(58.7%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(46.60, -4.77, -26.81)
CIE-LCH	lch(46.60, 27.23, 259.90°)
OKLab	oklab(53.73% -0.0368 -0.0752)
OKLCH	oklch(53.73% 0.084 243.9)
XYZ	xyz(14.1593, 15.7167, 33.2915)
Luminance	0.1572 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40739B #9B6840

analogous

#409B96 #40739B #40459B

triadic

#40739B #9B4073 #739B40

tetradic

#40739B #96409B #9B6840 #459B40

square

#40739B #96409B #9B6840 #459B40

split-complementary

#40739B #9B4045 #9B9640

monochromatic

#1C3344 #2E5370 #40739B #5C92BC #88AFCE

Accessibility & contrast

On white

5.07

#40739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#40739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40739B

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40739B	#FFFFFF	#000000	##FFFFFF
##40739B	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#62749D

Deuteranopia (green-blind)

#556A9A

Tritanopia (blue-blind)

#007D81

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #40739b;
/* rgb */ color: rgb(64, 115, 155);
/* oklch */ color: oklch(53.7% 0.084 243.9);

Tailwind

colors: {
  custom: {
    50: '#7c9bb8',
    500: '#40739b',
    950: '#000000',
  },
}

SCSS

$custom: #40739b;
$custom-light: #7c9bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#40739b",
  "rgb": {
    "r": 64,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 206.374,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.53731,
    "c": 0.08369,
    "h": 243.9
  },
  "luminance": 0.15718
}

Semantic roles & 50–950 ramp

primary

#40739B

secondary

#B8987E

accent

#8C56D1

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #40739B

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

Preview Lab → · Contrast checker → · Palette generator →