#103E56
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.6% 0.064 236.1), rgb(16, 62, 86).
Aa
White text reads best on this color (11.37:1).
About this color
#103E56 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.064 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.019 away. White text reads best on it, at 11.37:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.84:1 |
| White text | 11.37:1 |
Values
| HEX | #103E56 |
| RGB | rgb(16, 62, 86) |
| HSL | hsl(201, 69%, 20%) |
| OKLCH | oklch(34.6% 0.064 236.1) |
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 #103E56 | 11.37:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #103E56 | 1.84:1 | Fails | Lc 7.9 | Not readable |
| #103E56 text on white | 11.37:1 | AAA | Lc 96.0 | Preferred for body text |
| #103E56 text on black | 1.84:1 | Fails | Lc 0.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CA
oklch(70.6% 0.076 236.5)
-
Step 500
500
#4792BD
oklch(63% 0.099 236.4)
-
Step 600
600
#237CA9
oklch(55.6% 0.106 236)
-
Step 700
700
#136891
oklch(49% 0.099 236.3)
-
Step 800
800
#155576
oklch(42.7% 0.082 236.5)
-
Step 900
900 (this color)
#103E56
oklch(34.6% 0.064 236.1)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#103E56 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) | #323E57 | 0.037 |
| Deuteranopia (no green cones) | #293756 | 0.032 |
| Tritanopia (no blue cones) | #004446 | 0.041 |
| Achromatopsia (no color) | #3A3A3A | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103E56
#103E56
oklch(34.6% 0.064 236.1)
- #523015
#523015
oklch(34.6% 0.064 56.9)
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 #103E56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.019
- Midnight Green #073B4C ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.030
- Charcoal #264653 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.038
- Marine Blue #01386A ΔE 0.044
- Gunmetal #293241 ΔE 0.049
- Onyx #343A40 ΔE 0.051
Use #103E56 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.