#31397F#31397F

#31397F is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.9% C 0.117 H 274.5°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#31397F
RGB	rgb(49, 57, 127)
HSL	hsl(234, 44%, 35%)
HSV	hsv(234, 61%, 50%)
CMYK	cmyk(61.4%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(27.05, 19.53, -40.81)
CIE-LCH	lch(27.05, 45.24, 295.58°)
OKLab	oklab(37.87% 0.0091 -0.1169)
OKLCH	oklch(37.87% 0.117 274.5)
XYZ	xyz(6.5593, 5.1110, 20.7154)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31397F #7F7731

analogous

#31607F #31397F #50317F

triadic

#31397F #7F3139 #397F31

tetradic

#31397F #7F3160 #7F7731 #317F50

square

#31397F #7F3160 #7F7731 #317F50

split-complementary

#31397F #7F5031 #607F31

monochromatic

#0F1127 #202553 #31397F #424DAB #6670C4

Accessibility & contrast

On white

10.38

#31397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#31397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31397F

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31397F	#FFFFFF	#000000	##FFFFFF
##31397F	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4381

Deuteranopia (green-blind)

#003D7E

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31397f;
/* rgb */ color: rgb(49, 57, 127);
/* oklch */ color: oklch(37.9% 0.117 274.5);

Tailwind

colors: {
  custom: {
    50: '#716fa5',
    500: '#31397f',
    950: '#000000',
  },
}

SCSS

$custom: #31397f;
$custom-light: #716fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#31397f",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 233.846,
    "s": 44.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37869,
    "c": 0.11728,
    "h": 274.5
  },
  "luminance": 0.05112
}

Semantic roles & 50–950 ramp

primary

#31397F

secondary

#ABA460

accent

#C754D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31397F

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

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