#103783
Closest named color: Twilight Blue (#0A437A). oklch(36.1% 0.135 261.9), rgb(16, 55, 131).
Aa
White text reads best on this color (11.07:1).
About this color
#103783 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.135 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 11.07:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #103783 |
| RGB | rgb(16, 55, 131) |
| HSL | hsl(220, 78%, 29%) |
| OKLCH | oklch(36.1% 0.135 261.9) |
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 #103783 | 11.07:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #103783 | 1.89:1 | Fails | Lc 8.9 | Not readable |
| #103783 text on white | 11.07:1 | AAA | Lc 95.0 | Preferred for body text |
| #103783 text on black | 1.89:1 | Fails | Lc -7.6 | Not readable |
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 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFE
oklch(93.5% 0.03 262.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4182FF
oklch(63.1% 0.198 261.8)
-
Step 600
600
#1B65F4
oklch(55.5% 0.226 261.9)
-
Step 700
700
#0E53D5
oklch(49.2% 0.21 261.9)
-
Step 800
800
#0F45AC
oklch(42.8% 0.174 261.8)
-
Step 900
900 (this color)
#103783
oklch(36.1% 0.135 261.9)
-
Step 950
950
#0D2450
oklch(27.1% 0.086 261.8)
#103783 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) | #004186 | 0.027 |
| Deuteranopia (no green cones) | #003782 | 0.009 |
| Tritanopia (no blue cones) | #004A57 | 0.104 |
| Achromatopsia (no color) | #3C3C3C | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103783
#103783
oklch(36.1% 0.135 261.9)
- #513900
#513900
oklch(36.2% 0.075 82.1)
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 #103783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Marine Blue #01386A ΔE 0.045
- Cobalt #1E488F ΔE 0.053
- Marine #042E60 ΔE 0.066
- Sapphire #2138AB ΔE 0.069
- Royal #0C1793 ΔE 0.070
- Light Navy #155084 ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.076
Use #103783 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.