#001C45
Closest named color: Navy Blue (#001146). oklch(23.5% 0.085 257.4), rgb(0, 28, 69).
Aa
White text reads best on this color (16.77:1).
About this color
#001C45 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.085 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.032 away. White text reads best on it, at 16.77:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.25:1 |
| White text | 16.77:1 |
Values
| HEX | #001C45 |
| RGB | rgb(0, 28, 69) |
| HSL | hsl(216, 100%, 14%) |
| OKLCH | oklch(23.5% 0.085 257.4) |
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 #001C45 | 16.77:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #001C45 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #001C45 text on white | 16.77:1 | AAA | Lc 103.3 | Preferred for body text |
| #001C45 text on black | 1.25:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300
#99C3FF
oklch(80.9% 0.097 257.3)
-
Step 400
400
#5FA1FF
oklch(70.7% 0.154 257.4)
-
Step 500
500
#2985FF
oklch(63.1% 0.2 257.5)
-
Step 600
600
#006DE5
oklch(55.6% 0.201 257.4)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#004AA1
oklch(42.6% 0.155 257.6)
-
Step 900
900
#023E87
oklch(37.8% 0.134 257.5)
-
Step 950
950 (this color)
#001C45
oklch(23.5% 0.085 257.4)
#001C45 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) | #002146 | 0.016 |
| Deuteranopia (no green cones) | #001A44 | 0.006 |
| Tritanopia (no blue cones) | #00262D | 0.063 |
| Achromatopsia (no color) | #1D1D1D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001C45
#001C45
oklch(23.5% 0.085 257.4)
- #2B1B00
#2B1B00
oklch(23.7% 0.049 78.2)
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 #001C45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.032
- Rich Black #0D1B2A ΔE 0.053
- Oxford Blue #1B263B ΔE 0.055
- Night Blue #040348 ΔE 0.060
- Dark #1B2431 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.062
- Darkblue #030764 ΔE 0.068
- Marine #042E60 ΔE 0.073
Use #001C45 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.