#123B7C#123B7C

#123B7C is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.120 H 259.6°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#123B7C
RGB	rgb(18, 59, 124)
HSL	hsl(217, 75%, 28%)
HSV	hsv(217, 85%, 49%)
CMYK	cmyk(85.5%, 52.4%, 0%, 51.4%)
CIE-LAB	lab(25.90, 12.23, -40.86)
CIE-LCH	lch(25.90, 42.65, 286.66°)
OKLab	oklab(36.51% -0.0216 -0.1177)
OKLCH	oklch(36.51% 0.12 259.6)
XYZ	xyz(5.4502, 4.7111, 19.6870)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B7C #7C5312

analogous

#12707C #123B7C #1E127C

triadic

#123B7C #7C123B #3B7C12

tetradic

#123B7C #7C1270 #7C5312 #127C1E

square

#123B7C #7C1270 #7C5312 #127C1E

split-complementary

#123B7C #7C1E12 #707C12

monochromatic

#040D1B #0A2247 #123B7C #1A54B1 #296FE0

Accessibility & contrast

On white

10.81

#123B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#123B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B7C

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B7C	#FFFFFF	#000000	##FFFFFF
##123B7C	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11427E

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #123b7c;
/* rgb */ color: rgb(18, 59, 124);
/* oklch */ color: oklch(36.5% 0.120 259.6);

Tailwind

colors: {
  custom: {
    50: '#6470a2',
    500: '#123b7c',
    950: '#000000',
  },
}

SCSS

$custom: #123b7c;
$custom-light: #6470a2;
$custom-dark: #000000;

JSON

{
  "hex": "#123b7c",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 124
  },
  "hsl": {
    "h": 216.792,
    "s": 74.648,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36512,
    "c": 0.11964,
    "h": 259.6
  },
  "luminance": 0.04712
}

Semantic roles & 50–950 ramp

primary

#123B7C

secondary

#B28338

accent

#A937F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123B7C

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

Preview Lab → · Contrast checker → · Palette generator →