#04123B
Closest named color: Navy Blue (#001146). oklch(20.2% 0.082 264.3), rgb(4, 18, 59).
Aa
White text reads best on this color (18.18:1).
About this color
#04123B is a very dark, moderately saturated blue. In OKLCH its lightness is 20%, its chroma 0.082 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.022 away. White text reads best on it, at 18.18:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #04123B |
| RGB | rgb(4, 18, 59) |
| HSL | hsl(225, 87%, 12%) |
| OKLCH | oklch(20.2% 0.082 264.3) |
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 #04123B | 18.18:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #04123B | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #04123B text on white | 18.18:1 | AAA | Lc 104.6 | Preferred for body text |
| #04123B text on black | 1.15:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFE
oklch(88.6% 0.054 263.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#2F65EF
oklch(55.6% 0.216 264.2)
-
Step 700
700
#2353D0
oklch(49.2% 0.2 264.2)
-
Step 800
800
#1E45A8
oklch(42.8% 0.165 264.2)
-
Step 900
900
#1D3B85
oklch(37.7% 0.13 264.4)
-
Step 950
950 (this color)
#04123B
oklch(20.2% 0.082 264.3)
#04123B 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) | #00183C | 0.018 |
| Deuteranopia (no green cones) | #00133A | 0.007 |
| Tritanopia (no blue cones) | #001D24 | 0.064 |
| Achromatopsia (no color) | #151515 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04123B
#04123B
oklch(20.2% 0.082 264.3)
- #1F1500
#1F1500
oklch(20.3% 0.042 86.2)
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 #04123B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.022
- Night Blue #040348 ΔE 0.040
- Dark Navy #000435 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.050
- Very Dark Blue #000133 ΔE 0.057
- Dark Navy Blue #00022E ΔE 0.060
- Midnight #03012D ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.066
Use #04123B 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.