#1B435A#1B435A

#1B435A is a dark, muted cyan. Relative luminance 0.050; OKLCH L 36.5% C 0.060 H 236.8°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B435A
RGB	rgb(27, 67, 90)
HSL	hsl(202, 54%, 23%)
HSV	hsv(202, 70%, 35%)
CMYK	cmyk(70%, 25.6%, 0%, 64.7%)
CIE-LAB	lab(26.69, -5.80, -17.83)
CIE-LCH	lch(26.69, 18.75, 251.97°)
OKLab	oklab(36.54% -0.0327 -0.0501)
OKLCH	oklch(36.54% 0.06 236.8)
XYZ	xyz(4.3039, 4.9851, 10.4063)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B435A #5A321B

analogous

#1B5A51 #1B435A #1B235A

triadic

#1B435A #5A1B43 #435A1B

tetradic

#1B435A #511B5A #5A321B #235A1B

square

#1B435A #511B5A #5A321B #235A1B

split-complementary

#1B435A #5A1B23 #5A511B

monochromatic

#071218 #0D202B #1B435A #296689 #3789B8

Accessibility & contrast

On white

10.51

#1B435A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1B435A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B435A

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B435A	#FFFFFF	#000000	##FFFFFF
##1B435A	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38435B

Deuteranopia (green-blind)

#303C5A

Tritanopia (blue-blind)

#00494B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b435a;
/* rgb */ color: rgb(27, 67, 90);
/* oklch */ color: oklch(36.5% 0.060 236.8);

Tailwind

colors: {
  custom: {
    50: '#5f7788',
    500: '#1b435a',
    950: '#000000',
  },
}

SCSS

$custom: #1b435a;
$custom-light: #5f7788;
$custom-dark: #000000;

JSON

{
  "hex": "#1b435a",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 90
  },
  "hsl": {
    "h": 201.905,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.36542,
    "c": 0.05981,
    "h": 236.8
  },
  "luminance": 0.04986
}

Semantic roles & 50–950 ramp

primary

#1B435A

secondary

#905E41

accent

#804BDD

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #1B435A

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

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