#123A58#123A58

#123A58 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.7% C 0.069 H 244.8°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#123A58
RGB	rgb(18, 58, 88)
HSL	hsl(206, 66%, 21%)
HSV	hsv(206, 80%, 35%)
CMYK	cmyk(79.5%, 34.1%, 0%, 65.5%)
CIE-LAB	lab(23.20, -2.25, -22.01)
CIE-LCH	lch(23.20, 22.13, 264.17°)
OKLab	oklab(33.65% -0.0293 -0.0624)
OKLCH	oklch(33.65% 0.069 244.8)
XYZ	xyz(3.5233, 3.8589, 9.7898)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A58 #583012

analogous

#125853 #123A58 #121758

triadic

#123A58 #58123A #3A5812

tetradic

#123A58 #531258 #583012 #175812

square

#123A58 #531258 #583012 #175812

split-complementary

#123A58 #581217 #585312

monochromatic

#051119 #081925 #123A58 #1C5B8B #277DBE

Accessibility & contrast

On white

11.85

#123A58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#123A58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A58

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A58	#FFFFFF	#000000	##FFFFFF
##123A58	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3B59

Deuteranopia (green-blind)

#223457

Tritanopia (blue-blind)

#004145

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #123a58;
/* rgb */ color: rgb(18, 58, 88);
/* oklch */ color: oklch(33.7% 0.069 244.8);

Tailwind

colors: {
  custom: {
    50: '#5b6f87',
    500: '#123a58',
    950: '#000000',
  },
}

SCSS

$custom: #123a58;
$custom-light: #5b6f87;
$custom-dark: #000000;

JSON

{
  "hex": "#123a58",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 88
  },
  "hsl": {
    "h": 205.714,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33652,
    "c": 0.06892,
    "h": 244.8
  },
  "luminance": 0.03859
}

Semantic roles & 50–950 ramp

primary

#123A58

secondary

#915C35

accent

#883FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123A58

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

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