#135783
Closest named color: Deep Sea Blue (#015482). oklch(43.9% 0.097 243.1), rgb(19, 87, 131).
Aa
White text reads best on this color (7.72:1).
About this color
#135783 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.097 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.012 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #135783 |
| RGB | rgb(19, 87, 131) |
| HSL | hsl(204, 75%, 29%) |
| OKLCH | oklch(43.9% 0.097 243.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #135783 | 7.72:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #135783 | 2.71:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #135783 text on white | 7.72:1 | AAA | Lc 86.4 | Fine for body text |
| #135783 text on black | 2.71:1 | Fails | Lc -15.6 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A2C6E3
oklch(81% 0.056 242.7)
-
Step 400
400
#6DA7D5
oklch(70.6% 0.091 243.5)
-
Step 500
500
#4291CA
oklch(63.2% 0.116 243)
-
Step 600
600
#197AB6
oklch(55.6% 0.125 242.7)
-
Step 700
700
#06669D
oklch(49% 0.117 243.2)
-
Step 800
800 (this color)
#135783
oklch(43.9% 0.097 243.1)
-
Step 900
900
#164566
oklch(37.6% 0.076 243.3)
-
Step 950
950
#0F293C
oklch(27.1% 0.048 243)
#135783 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #425885 | 0.043 |
| Deuteranopia (no green cones) | #334E82 | 0.034 |
| Tritanopia (no blue cones) | #006267 | 0.066 |
| Achromatopsia (no color) | #535353 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #135783
#135783
oklch(43.9% 0.097 243.1)
- #774406
#774406
oklch(43.9% 0.097 62.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #135783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.012
- Light Navy #155084 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.025
- Dusk Blue #26538D ΔE 0.025
- Denim Blue #3B5B92 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.047
- Peacock Blue #016795 ΔE 0.051
- Cobalt #1E488F ΔE 0.051
Use #135783 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.