#123B7F#123B7F

#123B7F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.8% C 0.124 H 260.2°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#123B7F
RGB	rgb(18, 59, 127)
HSL	hsl(217, 75%, 28%)
HSV	hsv(217, 86%, 50%)
CMYK	cmyk(85.8%, 53.5%, 0%, 50.2%)
CIE-LAB	lab(26.12, 13.49, -42.38)
CIE-LCH	lch(26.12, 44.47, 287.66°)
OKLab	oklab(36.76% -0.0212 -0.1221)
OKLCH	oklch(36.76% 0.124 260.2)
XYZ	xyz(5.6428, 4.7881, 20.7014)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B7F #7F5612

analogous

#12717F #123B7F #1F127F

triadic

#123B7F #7F123B #3B7F12

tetradic

#123B7F #7F1271 #7F5612 #127F1F

square

#123B7F #7F1271 #7F5612 #127F1F

split-complementary

#123B7F #7F1F12 #717F12

monochromatic

#040C1B #0A2249 #123B7F #1A54B5 #2B6FE1

Accessibility & contrast

On white

10.73

#123B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#123B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B7F

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B7F	#FFFFFF	#000000	##FFFFFF
##123B7F	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B4381

Deuteranopia (green-blind)

#00397E

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123b7f;
/* rgb */ color: rgb(18, 59, 127);
/* oklch */ color: oklch(36.8% 0.124 260.2);

Tailwind

colors: {
  custom: {
    50: '#6570a5',
    500: '#123b7f',
    950: '#000000',
  },
}

SCSS

$custom: #123b7f;
$custom-light: #6570a5;
$custom-dark: #000000;

JSON

{
  "hex": "#123b7f",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 127
  },
  "hsl": {
    "h": 217.431,
    "s": 75.172,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36758,
    "c": 0.12397,
    "h": 260.2
  },
  "luminance": 0.04789
}

Semantic roles & 50–950 ramp

primary

#123B7F

secondary

#B58638

accent

#AB36F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #123B7F

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

Preview Lab → · Contrast checker → · Palette generator →