#103E65
Closest named color: Marine Blue (#01386A). oklch(35.5% 0.083 248.6), rgb(16, 62, 101).
Aa
White text reads best on this color (11.05:1).
About this color
#103E65 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.083 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.025 away. White text reads best on it, at 11.05:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #103E65 |
| RGB | rgb(16, 62, 101) |
| HSL | hsl(208, 73%, 23%) |
| OKLCH | oklch(35.5% 0.083 248.6) |
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 #103E65 | 11.05:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #103E65 | 1.89:1 | Fails | Lc 8.7 | Not readable |
| #103E65 text on white | 11.05:1 | AAA | Lc 95.2 | Preferred for body text |
| #103E65 text on black | 1.89:1 | Fails | Lc -7.4 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C5E8
oklch(81% 0.062 248.6)
-
Step 400
400
#6DA6DC
oklch(70.7% 0.1 248.1)
-
Step 500
500
#438ED3
oklch(63.1% 0.128 248.9)
-
Step 600
600
#1C77C0
oklch(55.6% 0.139 248.5)
-
Step 700
700
#0B64A6
oklch(49.2% 0.129 248.5)
-
Step 800
800
#105286
oklch(42.8% 0.106 248.2)
-
Step 900
900 (this color)
#103E65
oklch(35.5% 0.083 248.6)
-
Step 950
950
#0F283F
oklch(27% 0.053 248.7)
#103E65 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) | #2C4067 | 0.030 |
| Deuteranopia (no green cones) | #1F3864 | 0.020 |
| Tritanopia (no blue cones) | #00474C | 0.060 |
| Achromatopsia (no color) | #3C3C3C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103E65
#103E65
oklch(35.5% 0.083 248.6)
- #563300
#563300
oklch(35.6% 0.078 68.5)
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 #103E65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.043
- Midnight Green #073B4C ΔE 0.045
- Charcoal #264653 ΔE 0.050
- Marine #042E60 ΔE 0.052
Use #103E65 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.