#04151E
Closest named color: Rich Navy (#001219). oklch(18.6% 0.03 232.7), rgb(4, 21, 30).
Aa
White text reads best on this color (18.56:1).
About this color
#04151E is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.030 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.017 away. White text reads best on it, at 18.56:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.56:1 |
Values
| HEX | #04151E |
| RGB | rgb(4, 21, 30) |
| HSL | hsl(201, 76%, 7%) |
| OKLCH | oklch(18.6% 0.03 232.7) |
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 #04151E | 18.56:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #04151E | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #04151E text on white | 18.56:1 | AAA | Lc 105.1 | Preferred for body text |
| #04151E text on black | 1.13:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D4
oklch(80.9% 0.035 233.2)
-
Step 400
400
#7DA7BF
oklch(70.6% 0.057 233.7)
-
Step 500
500
#5A91AF
oklch(63% 0.074 233.5)
-
Step 600
600
#3E7B9A
oklch(55.5% 0.079 232.8)
-
Step 700
700
#306884
oklch(49.2% 0.074 232.8)
-
Step 800
800
#29556B
oklch(42.8% 0.061 232.4)
-
Step 900
900
#264657
oklch(37.7% 0.048 233.2)
-
Step 950
950 (this color)
#04151E
oklch(18.6% 0.03 232.7)
#04151E 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) | #11151E | 0.020 |
| Deuteranopia (no green cones) | #0D121E | 0.017 |
| Tritanopia (no blue cones) | #001718 | 0.018 |
| Achromatopsia (no color) | #131313 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04151E
#04151E
oklch(18.6% 0.03 232.7)
- #1D0F06
#1D0F06
oklch(18.6% 0.03 54.3)
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 #04151E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.017
- Rich Black #0D1B2A ΔE 0.034
- Almost Black #070D0D ΔE 0.040
- Dark #1B2431 ΔE 0.073
- Dark Navy #000435 ΔE 0.076
- Dark Navy Blue #00022E ΔE 0.078
- Jet #212529 ΔE 0.079
- Midnight #03012D ΔE 0.080
Use #04151E 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.