#123B8F#123B8F

#123B8F is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.147 H 262.3°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#123B8F
RGB	rgb(18, 59, 143)
HSL	hsl(220, 78%, 32%)
HSV	hsv(220, 87%, 56%)
CMYK	cmyk(87.4%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(27.40, 20.17, -50.25)
CIE-LCH	lch(27.40, 54.14, 291.87°)
OKLab	oklab(38.13% -0.0196 -0.1453)
OKLCH	oklch(38.13% 0.147 262.3)
XYZ	xyz(6.7696, 5.2388, 26.6357)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B8F #8F6612

analogous

#127A8F #123B8F #28128F

triadic

#123B8F #8F123B #3B8F12

tetradic

#123B8F #8F127A #8F6612 #128F28

square

#123B8F #8F127A #8F6612 #128F28

split-complementary

#123B8F #8F2812 #7A8F12

monochromatic

#040E22 #0B2559 #123B8F #1951C5 #366FE6

Accessibility & contrast

On white

10.25

#123B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#123B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B8F

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B8F	#FFFFFF	#000000	##FFFFFF
##123B8F	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)

#004792

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #123b8f;
/* rgb */ color: rgb(18, 59, 143);
/* oklch */ color: oklch(38.1% 0.147 262.3);

Tailwind

colors: {
  custom: {
    50: '#6970b1',
    500: '#123b8f',
    950: '#000000',
  },
}

SCSS

$custom: #123b8f;
$custom-light: #6970b1;
$custom-dark: #000000;

JSON

{
  "hex": "#123b8f",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 220.32,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38134,
    "c": 0.14659,
    "h": 262.3
  },
  "luminance": 0.0524
}

Semantic roles & 50–950 ramp

primary

#123B8F

secondary

#C3963A

accent

#B534F4

background

#F6F6FB

surface

#ECECF6

border

#C7C7D0

text

#080711

muted

#7A7A80

Preview Lab

Preview with #123B8F

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

Preview Lab → · Contrast checker → · Palette generator →