#123B7D#123B7D

#123B7D is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.121 H 259.8°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#123B7D
RGB	rgb(18, 59, 125)
HSL	hsl(217, 75%, 28%)
HSV	hsv(217, 86%, 49%)
CMYK	cmyk(85.6%, 52.8%, 0%, 51%)
CIE-LAB	lab(25.97, 12.65, -41.37)
CIE-LCH	lch(25.97, 43.26, 287.00°)
OKLab	oklab(36.59% -0.0214 -0.1192)
OKLCH	oklch(36.59% 0.121 259.8)
XYZ	xyz(5.5137, 4.7365, 20.0217)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B7D #7D5412

analogous

#12707D #123B7D #1E127D

triadic

#123B7D #7D123B #3B7D12

tetradic

#123B7D #7D1270 #7D5412 #127D1E

square

#123B7D #7D1270 #7D5412 #127D1E

split-complementary

#123B7D #7D1E12 #707D12

monochromatic

#040D1B #0A2248 #123B7D #1A54B2 #296FE0

Accessibility & contrast

On white

10.78

#123B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#123B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B7D

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B7D	#FFFFFF	#000000	##FFFFFF
##123B7D	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F437F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #123b7d;
/* rgb */ color: rgb(18, 59, 125);
/* oklch */ color: oklch(36.6% 0.121 259.8);

Tailwind

colors: {
  custom: {
    50: '#6470a3',
    500: '#123b7d',
    950: '#000000',
  },
}

SCSS

$custom: #123b7d;
$custom-light: #6470a3;
$custom-dark: #000000;

JSON

{
  "hex": "#123b7d",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 217.009,
    "s": 74.825,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36594,
    "c": 0.12109,
    "h": 259.8
  },
  "luminance": 0.04737
}

Semantic roles & 50–950 ramp

primary

#123B7D

secondary

#B38438

accent

#AA36F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123B7D

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

Preview Lab → · Contrast checker → · Palette generator →