#103B83
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.13 260.4), rgb(16, 59, 131).
Aa
White text reads best on this color (10.63:1).
About this color
#103B83 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.130 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.029 away. White text reads best on it, at 10.63:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #103B83 |
| RGB | rgb(16, 59, 131) |
| HSL | hsl(218, 78%, 29%) |
| OKLCH | oklch(37% 0.13 260.4) |
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 #103B83 | 10.63:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #103B83 | 1.97:1 | Fails | Lc 9.8 | Not readable |
| #103B83 text on white | 10.63:1 | AAA | Lc 94.1 | Preferred for body text |
| #103B83 text on black | 1.97:1 | Fails | Lc -8.4 | 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
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3A83FF
oklch(63.1% 0.199 260.3)
-
Step 600
600
#1368EF
oklch(55.6% 0.217 260.4)
-
Step 700
700
#0356D0
oklch(49.2% 0.201 260.3)
-
Step 800
800
#0947A8
oklch(42.7% 0.167 260.3)
-
Step 900
900 (this color)
#103B83
oklch(37% 0.13 260.4)
-
Step 950
950
#0C244E
oklch(26.9% 0.083 260.7)
#103B83 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) | #014486 | 0.025 |
| Deuteranopia (no green cones) | #003A82 | 0.009 |
| Tritanopia (no blue cones) | #004D59 | 0.100 |
| Achromatopsia (no color) | #3E3E3E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103B83
#103B83
oklch(37% 0.13 260.4)
- #553A00
#553A00
oklch(37% 0.077 79.3)
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 #103B83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.029
- Cobalt #1E488F ΔE 0.044
- Marine Blue #01386A ΔE 0.045
- Light Navy #155084 ΔE 0.062
- Sapphire #2138AB ΔE 0.068
- Marine #042E60 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.072
- Deep Sea Blue #015482 ΔE 0.073
Use #103B83 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.