#123B7E#123B7E

#123B7E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.7% C 0.123 H 260.0°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#123B7E
RGB	rgb(18, 59, 126)
HSL	hsl(217, 75%, 28%)
HSV	hsv(217, 86%, 49%)
CMYK	cmyk(85.7%, 53.2%, 0%, 50.6%)
CIE-LAB	lab(26.05, 13.07, -41.87)
CIE-LCH	lch(26.05, 43.87, 287.33°)
OKLab	oklab(36.68% -0.0213 -0.1207)
OKLCH	oklch(36.68% 0.123 260)
XYZ	xyz(5.5779, 4.7622, 20.3598)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B7E #7E5512

analogous

#12717E #123B7E #1F127E

triadic

#123B7E #7E123B #3B7E12

tetradic

#123B7E #7E1271 #7E5512 #127E1F

square

#123B7E #7E1271 #7E5512 #127E1F

split-complementary

#123B7E #7E1F12 #717E12

monochromatic

#040D1B #0A2248 #123B7E #1A54B4 #2A6FE1

Accessibility & contrast

On white

10.75

#123B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#123B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B7E

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B7E	#FFFFFF	#000000	##FFFFFF
##123B7E	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4380

Deuteranopia (green-blind)

#00397D

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123b7e;
/* rgb */ color: rgb(18, 59, 126);
/* oklch */ color: oklch(36.7% 0.123 260.0);

Tailwind

colors: {
  custom: {
    50: '#6570a4',
    500: '#123b7e',
    950: '#000000',
  },
}

SCSS

$custom: #123b7e;
$custom-light: #6570a4;
$custom-dark: #000000;

JSON

{
  "hex": "#123b7e",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 126
  },
  "hsl": {
    "h": 217.222,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36676,
    "c": 0.12254,
    "h": 260
  },
  "luminance": 0.04763
}

Semantic roles & 50–950 ramp

primary

#123B7E

secondary

#B48538

accent

#AA36F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123B7E

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

Preview Lab → · Contrast checker → · Palette generator →