#1B457F#1B457F

#1B457F is a dark, moderate cyan. Relative luminance 0.060; OKLCH L 39.4% C 0.109 H 257.3°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B457F
RGB	rgb(27, 69, 127)
HSL	hsl(215, 65%, 30%)
HSV	hsv(215, 79%, 50%)
CMYK	cmyk(78.7%, 45.7%, 0%, 50.2%)
CIE-LAB	lab(29.46, 7.55, -36.98)
CIE-LCH	lch(29.46, 37.74, 281.53°)
OKLab	oklab(39.41% -0.0238 -0.1059)
OKLCH	oklch(39.41% 0.109 257.3)
XYZ	xyz(6.4095, 6.0208, 20.8989)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B457F #7F551B

analogous

#1B777F #1B457F #231B7F

triadic

#1B457F #7F1B45 #457F1B

tetradic

#1B457F #7F1B77 #7F551B #1B7F23

square

#1B457F #7F1B77 #7F551B #1B7F23

split-complementary

#1B457F #7F231B #777F1B

monochromatic

#060E1A #102A4D #1B457F #2660B1 #3E7ED6

Accessibility & contrast

On white

9.53

#1B457F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1B457F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B457F

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B457F	#FFFFFF	#000000	##FFFFFF
##1B457F	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284A81

Deuteranopia (green-blind)

#14417E

Tritanopia (blue-blind)

#00535B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b457f;
/* rgb */ color: rgb(27, 69, 127);
/* oklch */ color: oklch(39.4% 0.109 257.3);

Tailwind

colors: {
  custom: {
    50: '#6778a4',
    500: '#1b457f',
    950: '#000000',
  },
}

SCSS

$custom: #1b457f;
$custom-light: #6778a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b457f",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 127
  },
  "hsl": {
    "h": 214.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.39408,
    "c": 0.10857,
    "h": 257.3
  },
  "luminance": 0.06022
}

Semantic roles & 50–950 ramp

primary

#1B457F

secondary

#B38443

accent

#A140E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B457F

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

Preview Lab → · Contrast checker → · Palette generator →