#04192D
Closest named color: Rich Black (#0D1B2A). oklch(20.8% 0.049 249.2), rgb(4, 25, 45).
Aa
White text reads best on this color (17.76:1).
About this color
#04192D is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.049 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.016 away. White text reads best on it, at 17.76:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.76:1 |
Values
| HEX | #04192D |
| RGB | rgb(4, 25, 45) |
| HSL | hsl(209, 84%, 10%) |
| OKLCH | oklch(20.8% 0.049 249.2) |
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 #04192D | 17.76:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #04192D | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #04192D text on white | 17.76:1 | AAA | Lc 104.4 | Preferred for body text |
| #04192D text on black | 1.18:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E5
oklch(80.9% 0.058 250.2)
-
Step 400
400
#73A5D8
oklch(70.7% 0.092 249.7)
-
Step 500
500
#4C8ECD
oklch(63.1% 0.117 249.2)
-
Step 600
600
#2C77BA
oklch(55.6% 0.127 249.2)
-
Step 700
700
#1D64A1
oklch(49.2% 0.119 249.1)
-
Step 800
800
#1B5282
oklch(42.8% 0.098 248.8)
-
Step 900
900
#1D4468
oklch(37.7% 0.076 248.9)
-
Step 950
950 (this color)
#04192D
oklch(20.8% 0.049 249.2)
#04192D 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) | #101A2E | 0.017 |
| Deuteranopia (no green cones) | #09162D | 0.012 |
| Tritanopia (no blue cones) | #001E20 | 0.037 |
| Achromatopsia (no color) | #181818 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04192D
#04192D
oklch(20.8% 0.049 249.2)
- #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 #04192D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.016
- Rich Navy #001219 ΔE 0.047
- Dark #1B2431 ΔE 0.054
- Navy Blue #001146 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.062
- Jet #212529 ΔE 0.066
- Dark Navy #000435 ΔE 0.070
- Almost Black #070D0D ΔE 0.071
Use #04192D 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.