#04192B
Closest named color: Rich Black (#0D1B2A). oklch(20.7% 0.045 246.7), rgb(4, 25, 43).
Aa
White text reads best on this color (17.81:1).
About this color
#04192B is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.045 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.015 away. White text reads best on it, at 17.81:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.81:1 |
Values
| HEX | #04192B |
| RGB | rgb(4, 25, 43) |
| HSL | hsl(208, 83%, 9%) |
| OKLCH | oklch(20.7% 0.045 246.7) |
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 #04192B | 17.81:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #04192B | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #04192B text on white | 17.81:1 | AAA | Lc 104.4 | Preferred for body text |
| #04192B text on black | 1.17:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E2
oklch(81% 0.054 245.9)
-
Step 400
400
#74A6D4
oklch(70.8% 0.086 247.1)
-
Step 500
500
#4D8FC8
oklch(63.1% 0.11 246.7)
-
Step 600
600
#2D78B5
oklch(55.6% 0.12 246.9)
-
Step 700
700
#1F659C
oklch(49.2% 0.111 246.8)
-
Step 800
800
#1C527E
oklch(42.6% 0.092 247)
-
Step 900
900
#1E4565
oklch(37.8% 0.071 245.9)
-
Step 950
950 (this color)
#04192B
oklch(20.7% 0.045 246.7)
#04192B 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) | #111A2C | 0.019 |
| Deuteranopia (no green cones) | #0B162B | 0.013 |
| Tritanopia (no blue cones) | #001D1F | 0.033 |
| Achromatopsia (no color) | #181818 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04192B
#04192B
oklch(20.7% 0.045 246.7)
- #251300
#251300
oklch(20.7% 0.045 68.1)
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 #04192B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.015
- Rich Navy #001219 ΔE 0.043
- Dark #1B2431 ΔE 0.054
- Navy Blue #001146 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.063
- Jet #212529 ΔE 0.066
- Almost Black #070D0D ΔE 0.068
- Dark Navy #000435 ΔE 0.072
Use #04192B 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.