#101C4E
Closest named color: Navy Blue (#001146). oklch(25.2% 0.093 268.5), rgb(16, 28, 78).
Aa
White text reads best on this color (16.17:1).
About this color
#101C4E is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.093 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.044 away. White text reads best on it, at 16.17:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.17:1 |
Values
| HEX | #101C4E |
| RGB | rgb(16, 28, 78) |
| HSL | hsl(228, 66%, 18%) |
| OKLCH | oklch(25.2% 0.093 268.5) |
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 #101C4E | 16.17:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #101C4E | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #101C4E text on white | 16.17:1 | AAA | Lc 102.8 | Preferred for body text |
| #101C4E text on black | 1.29:1 | 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 950.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD9FF
oklch(88.6% 0.055 268.3)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600
#3C5BFF
oklch(55.7% 0.244 268.4)
-
Step 700
700
#3048DF
oklch(49.1% 0.228 268.6)
-
Step 800
800
#273DB4
oklch(42.7% 0.189 268.5)
-
Step 900
900
#22368E
oklch(37.6% 0.147 268.4)
-
Step 950
950 (this color)
#101C4E
oklch(25.2% 0.093 268.5)
#101C4E 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) | #002450 | 0.025 |
| Deuteranopia (no green cones) | #001E4D | 0.017 |
| Tritanopia (no blue cones) | #002831 | 0.074 |
| Achromatopsia (no color) | #212121 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101C4E
#101C4E
oklch(25.2% 0.093 268.5)
- #2C2000
#2C2000
oklch(25.1% 0.051 88.2)
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 #101C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.054
- Marine #042E60 ΔE 0.059
- Darkblue #030764 ΔE 0.059
- Midnight Blue #191970 ΔE 0.063
- Dark #1B2431 ΔE 0.067
- Night Blue #040348 ΔE 0.067
Use #101C4E 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.