#123F80#123F80

#123F80 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.8% C 0.120 H 258.4°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#123F80
RGB	rgb(18, 63, 128)
HSL	hsl(215, 75%, 29%)
HSV	hsv(215, 86%, 50%)
CMYK	cmyk(85.9%, 50.8%, 0%, 49.8%)
CIE-LAB	lab(27.41, 11.10, -40.92)
CIE-LCH	lch(27.41, 42.40, 285.17°)
OKLab	oklab(37.77% -0.0241 -0.1178)
OKLCH	oklch(37.77% 0.12 258.4)
XYZ	xyz(5.9218, 5.2414, 21.1175)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F80 #805312

analogous

#127680 #123F80 #1C1280

triadic

#123F80 #80123F #3F8012

tetradic

#123F80 #801276 #805312 #12801C

square

#123F80 #801276 #805312 #12801C

split-complementary

#123F80 #801C12 #768012

monochromatic

#040D1B #0A254A #123F80 #1A59B6 #2B76E1

Accessibility & contrast

On white

10.25

#123F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#123F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F80

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F80	#FFFFFF	#000000	##FFFFFF
##123F80	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184682

Deuteranopia (green-blind)

#003C7F

Tritanopia (blue-blind)

#004F59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #123f80;
/* rgb */ color: rgb(18, 63, 128);
/* oklch */ color: oklch(37.8% 0.120 258.4);

Tailwind

colors: {
  custom: {
    50: '#6573a5',
    500: '#123f80',
    950: '#000000',
  },
}

SCSS

$custom: #123f80;
$custom-light: #6573a5;
$custom-dark: #000000;

JSON

{
  "hex": "#123f80",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 128
  },
  "hsl": {
    "h": 215.455,
    "s": 75.342,
    "l": 28.627
  },
  "oklch": {
    "l": 0.37769,
    "c": 0.12021,
    "h": 258.4
  },
  "luminance": 0.05242
}

Semantic roles & 50–950 ramp

primary

#123F80

secondary

#B68238

accent

#A536F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #123F80

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

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