#001D45
Closest named color: Navy Blue (#001146). oklch(23.8% 0.083 256.7), rgb(0, 29, 69).
Aa
White text reads best on this color (16.64:1).
About this color
#001D45 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.083 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.035 away. White text reads best on it, at 16.64:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.26:1 |
| White text | 16.64:1 |
Values
| HEX | #001D45 |
| RGB | rgb(0, 29, 69) |
| HSL | hsl(215, 100%, 14%) |
| OKLCH | oklch(23.8% 0.083 256.7) |
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 #001D45 | 16.64:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #001D45 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #001D45 text on white | 16.64:1 | AAA | Lc 103.2 | Preferred for body text |
| #001D45 text on black | 1.26:1 | 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
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C2DBFE
oklch(88.4% 0.055 256.8)
-
Step 300
300
#98C3FF
oklch(80.9% 0.097 256.8)
-
Step 400
400
#5DA1FF
oklch(70.7% 0.155 256.9)
-
Step 500
500
#2386FF
oklch(63.2% 0.2 256.6)
-
Step 600
600
#006EE2
oklch(55.6% 0.196 256.8)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900
#003E85
oklch(37.6% 0.132 256.8)
-
Step 950
950 (this color)
#001D45
oklch(23.8% 0.083 256.7)
#001D45 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) | #022146 | 0.014 |
| Deuteranopia (no green cones) | #001B44 | 0.006 |
| Tritanopia (no blue cones) | #00272D | 0.063 |
| Achromatopsia (no color) | #1E1E1E | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001D45
#001D45
oklch(23.8% 0.083 256.7)
- #2C1B00
#2C1B00
oklch(23.8% 0.05 76.5)
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 #001D45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.052
- Rich Black #0D1B2A ΔE 0.052
- Dark #1B2431 ΔE 0.059
- Night Blue #040348 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.064
- Darkblue #030764 ΔE 0.069
- Marine #042E60 ΔE 0.071
Use #001D45 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.